Cerebellar Neoplasms
Primary or metastatic neoplasms of the CEREBELLUM. Tumors in this location frequently present with ATAXIA or signs of INTRACRANIAL HYPERTENSION due to obstruction of the fourth ventricle. Common primary cerebellar tumors include fibrillary ASTROCYTOMA and cerebellar HEMANGIOBLASTOMA. The cerebellum is a relatively common site for tumor metastases from the lung, breast, and other distant organs. (From Okazaki & Scheithauer, Atlas of Neuropathology, 1988, p86 and p141)
Neuroma, Acoustic
A benign SCHWANNOMA of the eighth cranial nerve (VESTIBULOCOCHLEAR NERVE), mostly arising from the vestibular branch (VESTIBULAR NERVE) during the fifth or sixth decade of life. Clinical manifestations include HEARING LOSS; HEADACHE; VERTIGO; TINNITUS; and FACIAL PAIN. Bilateral acoustic neuromas are associated with NEUROFIBROMATOSIS 2. (From Adams et al., Principles of Neurology, 6th ed, p673)
Facial Nerve Diseases
Diseases of the facial nerve or nuclei. Pontine disorders may affect the facial nuclei or nerve fascicle. The nerve may be involved intracranially, along its course through the petrous portion of the temporal bone, or along its extracranial course. Clinical manifestations include facial muscle weakness, loss of taste from the anterior tongue, hyperacusis, and decreased lacrimation.
Epidermal Cyst
Cranial Nerve Neoplasms
Meningioma
A relatively common neoplasm of the CENTRAL NERVOUS SYSTEM that arises from arachnoidal cells. The majority are well differentiated vascular tumors which grow slowly and have a low potential to be invasive, although malignant subtypes occur. Meningiomas have a predilection to arise from the parasagittal region, cerebral convexity, sphenoidal ridge, olfactory groove, and SPINAL CANAL. (From DeVita et al., Cancer: Principles and Practice of Oncology, 5th ed, pp2056-7)
Trigeminal Neuralgia
A syndrome characterized by recurrent episodes of excruciating pain lasting several seconds or longer in the sensory distribution of the TRIGEMINAL NERVE. Pain may be initiated by stimulation of trigger points on the face, lips, or gums or by movement of facial muscles or chewing. Associated conditions include MULTIPLE SCLEROSIS, vascular anomalies, ANEURYSMS, and neoplasms. (Adams et al., Principles of Neurology, 6th ed, p187)
Ear Neoplasms
Vestibulocochlear Nerve Diseases
Hemifacial Spasm
Recurrent clonic contraction of facial muscles, restricted to one side. It may occur as a manifestation of compressive lesions involving the seventh cranial nerve (FACIAL NERVE DISEASES), during recovery from BELL PALSY, or in association with other disorders. (From Adams et al., Principles of Neurology, 6th ed, p1378)
Petrous Bone
Cerebellar Diseases
Meningeal Neoplasms
Choroid Plexus Neoplasms
Benign or malignant tumors which arise from the choroid plexus of the ventricles of the brain. Papillomas (see PAPILLOMA, CHOROID PLEXUS) and carcinomas are the most common histologic subtypes, and tend to seed throughout the ventricular and subarachnoid spaces. Clinical features include headaches, ataxia and alterations of consciousness, primarily resulting from associated HYDROCEPHALUS. (From Devita et al., Cancer: Principles and Practice of Oncology, 5th ed, p2072; J Neurosurg 1998 Mar;88(3):521-8)
Neurilemmoma
A neoplasm that arises from SCHWANN CELLS of the cranial, peripheral, and autonomic nerves. Clinically, these tumors may present as a cranial neuropathy, abdominal or soft tissue mass, intracranial lesion, or with spinal cord compression. Histologically, these tumors are encapsulated, highly vascular, and composed of a homogenous pattern of biphasic fusiform-shaped cells that may have a palisaded appearance. (From DeVita Jr et al., Cancer: Principles and Practice of Oncology, 5th ed, pp964-5)
Vestibulocochlear Nerve
The 8th cranial nerve. The vestibulocochlear nerve has a cochlear part (COCHLEAR NERVE) which is concerned with hearing and a vestibular part (VESTIBULAR NERVE) which mediates the sense of balance and head position. The fibers of the cochlear nerve originate from neurons of the SPIRAL GANGLION and project to the cochlear nuclei (COCHLEAR NUCLEUS). The fibers of the vestibular nerve arise from neurons of Scarpa's ganglion and project to the VESTIBULAR NUCLEI.
Cranial Fossa, Posterior
The infratentorial compartment that contains the CEREBELLUM and BRAIN STEM. It is formed by the posterior third of the superior surface of the body of the sphenoid (SPHENOID BONE), by the occipital, the petrous, and mastoid portions of the TEMPORAL BONE, and the posterior inferior angle of the PARIETAL BONE.
Cochlear Aqueduct
Tinnitus
A nonspecific symptom of hearing disorder characterized by the sensation of buzzing, ringing, clicking, pulsations, and other noises in the ear. Objective tinnitus refers to noises generated from within the ear or adjacent structures that can be heard by other individuals. The term subjective tinnitus is used when the sound is audible only to the affected individual. Tinnitus may occur as a manifestation of COCHLEAR DISEASES; VESTIBULOCOCHLEAR NERVE DISEASES; INTRACRANIAL HYPERTENSION; CRANIOCEREBRAL TRAUMA; and other conditions.
Facial Muscles
Spasm
Ganglioglioma
Rare indolent tumors comprised of neoplastic glial and neuronal cells which occur primarily in children and young adults. Benign lesions tend to be associated with long survival unless the tumor degenerates into a histologically malignant form. They tend to occur in the optic nerve and white matter of the brain and spinal cord.
Facial Nerve
The 7th cranial nerve. The facial nerve has two parts, the larger motor root which may be called the facial nerve proper, and the smaller intermediate or sensory root. Together they provide efferent innervation to the muscles of facial expression and to the lacrimal and SALIVARY GLANDS, and convey afferent information for TASTE from the anterior two-thirds of the TONGUE and for TOUCH from the EXTERNAL EAR.
Magnetic Resonance Imaging
Endolymphatic Sac
Trigeminal Nerve
The 5th and largest cranial nerve. The trigeminal nerve is a mixed motor and sensory nerve. The larger sensory part forms the ophthalmic, mandibular, and maxillary nerves which carry afferents sensitive to external or internal stimuli from the skin, muscles, and joints of the face and mouth and from the teeth. Most of these fibers originate from cells of the TRIGEMINAL GANGLION and project to the TRIGEMINAL NUCLEUS of the brain stem. The smaller motor part arises from the brain stem trigeminal motor nucleus and innervates the muscles of mastication.
Nerve Compression Syndromes
Papilloma, Choroid Plexus
A usually benign neoplasm that arises from the cuboidal epithelium of the choroid plexus and takes the form of an enlarged CHOROID PLEXUS, which may be associated with oversecretion of CSF. The tumor usually presents in the first decade of life with signs of increased intracranial pressure including HEADACHES; ATAXIA; DIPLOPIA; and alterations of mental status. In children it is most common in the lateral ventricles and in adults it tends to arise in the fourth ventricle. Malignant transformation to choroid plexus carcinomas may rarely occur. (Adams et al., Principles of Neurology, 6th ed, p667; DeVita et al., Cancer: Principles and Practice of Oncology, 5th ed, p2072)
Facial Paralysis
Severe or complete loss of facial muscle motor function. This condition may result from central or peripheral lesions. Damage to CNS motor pathways from the cerebral cortex to the facial nuclei in the pons leads to facial weakness that generally spares the forehead muscles. FACIAL NERVE DISEASES generally results in generalized hemifacial weakness. NEUROMUSCULAR JUNCTION DISEASES and MUSCULAR DISEASES may also cause facial paralysis or paresis.
Lipoma
Neurothekeoma
Ear, Inner
The essential part of the hearing organ consists of two labyrinthine compartments: the bony labyrinthine and the membranous labyrinth. The bony labyrinth is a complex of three interconnecting cavities or spaces (COCHLEA; VESTIBULAR LABYRINTH; and SEMICIRCULAR CANALS) in the TEMPORAL BONE. Within the bony labyrinth lies the membranous labyrinth which is a complex of sacs and tubules (COCHLEAR DUCT; SACCULE AND UTRICLE; and SEMICIRCULAR DUCTS) forming a continuous space enclosed by EPITHELIUM and connective tissue. These spaces are filled with LABYRINTHINE FLUIDS of various compositions.
Tomography, X-Ray Computed
Temporal Bone
Either of a pair of compound bones forming the lateral (left and right) surfaces and base of the skull which contains the organs of hearing. It is a large bone formed by the fusion of parts: the squamous (the flattened anterior-superior part), the tympanic (the curved anterior-inferior part), the mastoid (the irregular posterior portion), and the petrous (the part at the base of the skull).
Sarcoma, Myeloid
Cerebrospinal Fluid Proteins
Melanoma, Experimental
Melanoma
A malignant neoplasm derived from cells that are capable of forming melanin, which may occur in the skin of any part of the body, in the eye, or, rarely, in the mucous membranes of the genitalia, anus, oral cavity, or other sites. It occurs mostly in adults and may originate de novo or from a pigmented nevus or malignant lentigo. Melanomas frequently metastasize widely, and the regional lymph nodes, liver, lungs, and brain are likely to be involved. The incidence of malignant skin melanomas is rising rapidly in all parts of the world. (Stedman, 25th ed; from Rook et al., Textbook of Dermatology, 4th ed, p2445)
Arachnoid Cysts
Intracranial or spinal cavities containing a cerebrospinal-like fluid, the wall of which is composed of arachnoidal cells. They are most often developmental or related to trauma. Intracranial arachnoid cysts usually occur adjacent to arachnoidal cistern and may present with HYDROCEPHALUS; HEADACHE; SEIZURES; and focal neurologic signs. (From Joynt, Clinical Neurology, 1994, Ch44, pp105-115)
Arachnoid
Hearing Loss
Hearing Loss, Sensorineural
Hearing Loss, Noise-Induced
Hearing Aids
Hearing
Contralateral deafness following unilateral suboccipital brain tumor surgery in a patient with large vestibular aqueduct--case report. (1/142)
A 68-year-old female developed contralateral deafness following extirpation of a left cerebellopontine angle epidermoid cyst. Computed tomography showed that large vestibular aqueduct was present. This unusual complication may have been caused by an abrupt pressure change after cerebrospinal fluid release, which was transmitted through the large vestibular aqueduct and resulted in cochlear damage. (+info)Clinical features and outcomes in patients with non-acoustic cerebellopontine angle tumours. (2/142)
OBJECTIVES: Non-acoustic tumours of the cerebellopontine angle differ from vestibular schwannomas in their prevalence, clinical features, operative management, and surgical outcome. These features were studied in patients presenting to the regional neuro-otological unit. METHODS: A retrospective analysis of clinical notes identified 42 patients with non-acoustic tumours of the cerebellopontine angle. Data were extracted regarding presenting clinical features, histopathological data after surgical resection, surgical morbidity and mortality, and clinical outcome (mean 32 months follow up). RESULTS: The study group comprised 25 meningiomas (60%), 12 epidermoid cysts/cholesteatomata (28%), and five other tumours. In patients with meningiomas, symptoms differed considerably from patients presenting with vestibular schwannomas. Cerebellar signs were present in 52% and hearing loss in only 68%. Twenty per cent of patients had hydrocephalus at the time of diagnosis. After surgical resection, normal facial nerve function was preserved in 75% of cases. In the epidermoid group, fifth, seventh, and eighth nerve deficits were present in 42%, 33%, and 66% respectively. There were no new postoperative facial palsies. There were two recurrences (17%) requiring reoperation. Overall, there were two perioperative deaths from pneumonia and meningitis. CONCLUSIONS: Patients with non-acoustic lesions of the cerebellopontine angle often present with different symptoms and signs from those found in patients with schwannomas. Hearing loss is less prevalent and cerebellar signs and facial paresis are more common as presenting features. Hydrocephalus is often present in patients presenting with cerebellopontine angle meningiomas. Non-acoustic tumours can usually be resected with facial nerve preservation. (+info)Choroid plexus papilloma of cerebellopontine angle with extension to foramen magnum. (3/142)
A case of choroid plexus papilloma resembling meningioma of cerebellopontine (CP) angle with its extension to foramen magnum is presented. Occurrence of this tumour in CP angle is very rare. Its extension towards foramen magnum is further rare. It was a real diagnostic enigma preoperatively as the tumour was resembling meningioma upto some extent on radiological study. Retromastoid craniectomy with microsurgical excision of tumour and its extension was achieved in toto. Tumour was attached to few rootlets of lower cranial nerves which were preserved. Attachment of the tumour with lower cranial nerves again caused diagnostic confusion with neurofibroma intraoperatively. (+info)High-resolution MR cisternography of the cerebellopontine angle: 2D versus 3D fast spin-echo sequences. (4/142)
BACKGROUND AND PURPOSE: The clinical usefulness of MR cisternography of the cerebellopontine angle, applying 2D or 3D fast spin-echo sequences, has been reported recently. Our purpose was to investigate the cause of signal loss in CSF in the prepontine or cerebellopontine angle cistern on 2D FSE MR images and to compare the cisternographic effects of 2D and 3D FSE sequences. METHODS: Preliminary experiments were performed in four volunteers to assess the causes of signal loss. Initially, using a 2D cardiac-gated cine phase-contrast method with a velocity encoding value of 6 cm/s, we measured the velocity and flow pattern of CSF. Comparisons were made to assess the effects of intravoxel dephasing, amplitude of the section-selecting gradient, echo time (TE), and section thickness. Four healthy subjects and 13 patients with ear symptoms were examined, and multisection 3-mm-thick 2D images and 30-mm-slab, 1-mm-section 3D images were compared qualitatively and quantitatively. Then, 3D MR cisternography was performed in 400 patients with ear symptoms, and qualitative evaluation was performed. RESULTS: In volunteers, the average peak velocity of CSF was 1.2 cm/s. With TE = 250, CSF may move an average of 3 mm, and can be washed out of a 3-mm-thick 2D section volume. The CSF signal relative to that of a water phantom decreased gradually as TE increased on single-section 3-mm-thick 2D images. The CSF signal relative to that of the water phantom increased gradually as section thickness increased. No significant differences were noted in intravoxel dephasing and amplitude of the section-selecting gradient. The contrast-to-noise ratio (CNR) between CSF and the cerebellar peduncle, and the visibility of the cranial nerves and vertebrobasilar artery were significantly improved on 3D images in 17 subjects. In images from 400 patients, no significant signal loss in the cistern was observed using 3D FSE. CONCLUSION: CSF signal loss in thin-section 2D MR cisternography is mainly attributable to the wash-out phenomenon. 3D acquisition can reduce this phenomenon and provide thinner sections. The scan time for 3D acquisition is not excessive when a long echo train length and half-Fourier imaging are used. MR cisternography should be performed using a 3D acquisition. (+info)High-resolution MR cisternography of the cerebellopontine angle, obtained with a three-dimensional fast asymmetric spin-echo sequence in a 0.35-T open MR imaging unit. (5/142)
High-resolution MR cisternography performed with 3D fast asymmetric spin-echo imaging (3D fast spin-echo with an ultra-long echo train length and asymmetric Fourier imaging) was optimized in a 0.35-T open MR imaging unit. The 0.35- and 1.5-T images of the two volunteers and three patients with acoustic schwannomas were then compared. The optimal parameters for images obtained by 3D fast asymmetric spin-echo imaging at 0.35 T were as follows: field of view, 15 cm; matrix, 256 x 256 x 40; section thickness, 1 mm; echo train length, 76; and imaging time, 10 minutes 44 seconds. Scans obtained from both normal volunteers showed the facial, cochlear, and superior and inferior vestibular nerves separately in the internal auditory canal on both 0.35- and 1.5-T images. All three acoustic schwannomas were depicted on both 0.35- and 1.5-T images. Screening for disease at the cerebellopontine angle and in the internal auditory canal, without the administration of contrast material on a low-field open MR imaging unit and within a clinically acceptable imaging time, may be possible. Further controlled prospective studies are required, however, before implementation on a wide basis. If proved effective, this may be of particular value for reducing healthcare costs and for imaging claustrophobic and pediatric patients in an open system. (+info)Posterior fossa surgery in the sitting position in a pregnant patient with cerebellopontine angle meningioma. (6/142)
Primary brain tumours and pregnancy rarely occur together; meningioma and pregnancy is rarer still. We describe a 30-yr-old woman in the 25th week of pregnancy who underwent surgery in the sitting position for a large cerebellopontine angle meningioma that was compressing and displacing the pons and medulla. The surgical procedure and postoperative period were uneventful. This case demonstrates that when absolutely necessary, anaesthesia and neurosurgery for posterior fossa lesions can be successful during the second trimester of pregnancy. Furthermore, if indicated and if the operating team is experienced, the operation can be performed safely with the patient in the classical sitting position. It is emphasized that continuous and attentive monitoring of the mother and fetus are essential. (+info)Magnetic resonance imaging artifact following acoustic neurofibroma surgery--case report. (7/142)
Metallic artifacts in magnetic resonance (MR) imaging occur mostly in patients who have received an implant at surgery. Similar artifacts are now increasingly recognized in patients in whom high-speed drills have been used. A 15-year-old male with neurofibromatosis 2 had undergone excision of acoustic neurofibroma on the left 1.5 years prior to the present admission. MR imaging to evaluate the acoustic neurofibroma on the right showed a metallic artifact at the site of the previous surgery. Computed tomography did not show any evidence of metal debris. The artifact was probably caused by metallic dust or debris from a high-speed drill during the first surgery. We suggest that care should be taken to prevent deposition of such debris in the operative field to prevent this complication. (+info)Malignant spread of haemangioblastoma: report on two cases. (8/142)
Two cases are described in which, after successful removal of a cerebellar haemangioblastoma followed by several years of freedom from symptoms, there developed a progressive spinal cord compression, leading to death. At necropsy the spinal cords in both cases and the brainstem in one case, were irregularly plastered with haemangioblastoma. Although there was no doubt that malignant spread had occurred from one or more primary tumours, the histology of the tumour tissue was in no way different from that of conventional haemangioblastoma. (+info)
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Subarachnoid cisterns
It is situated at the cerebellopontine angle - the lateral angle between the cerebellum and the pons. It contains: The seventh ... ISBN 978-087893-695-3. Yee, Juliana K. "Cerebellopontine angle cistern , Radiology Reference Article , Radiopaedia.org". ... which passes between the posterior cerebral and superior cerebellar arteries Cerebellopontine angle cistern. ...
Arachnoid cyst
"Cerebellopontine angle arachnoid cyst harbouring ectopic neuroglia". Pediatr Neurosurg. 41 (4): 220-3. doi:10.1159/000086566. ...
Neurosurgery
Majid Samii - pioneer of cerebello-pontine angle tumor surgery. World Federation of Neurosurgical Societies coined a medal of ...
Lateral aperture
... specifically into the pontocerebellar cistern at the cerebellopontine angle. The structure is also called the lateral aperture ...
Intracranial epidermoid cyst
About 40% of these cysts originate in the cerebellopontine angle. Magnetic resonance imaging (MRI) and computed tomography (CT ...
Robert F. Spetzler
A partial list is below: Surgery of the Cerebellopontine Angle. Nicholas C. Bambakidis (Author), Cliff A. Megerian (Author), ...
Granulomatous meningoencephalitis
It usually is found in the cerebrum or cerebellopontine angle. Symptoms may be acute or develop slowly over several months and ...
Anatomy of the cerebellum
From its origin, it branches along the inferior portion of the pons at the cerebellopontine angle before reaching the ... Moreover, it could cause an infarct of the cerebellopontine angle. This could lead to hyperacusia (dysfunction of the stapedius ...
Trigeminal neuralgia
Further causes, besides an aneurysm, multiple sclerosis or cerebellopontine angle tumor, include: a posterior fossa tumor, any ... Babu R, Murali R (1991). "Arachnoid cyst of the cerebellopontine angle manifesting as contralateral trigeminal neuralgia: case ... such as an arachnoid cyst or meningioma in the cerebellopontine angle; or by a traumatic event, such as a car accident. Short- ...
Bruns nystagmus
... is an unusual type of bilateral nystagmus most commonly occurring in patients with cerebellopontine angle ... Nedzelski JM (October 1983). "Cerebellopontine angle tumors: bilateral flocculus compression as cause of associated oculomotor ...
Translabyrinthine approach
The translabyrinthine approach is a surgical approach to the cerebellopontine angle, or CPA. It is used in the surgical ... extirpation of lesions of the cerebellopontine angle, including acoustic neuroma. The translabyrinthine approach was developed ...
Lipoma
ISBN 978-1-4160-2999-1. Crowson MG, Symons SP, Chen JM (2013). "Left cerebellopontine angle lipoma with mild brainstem ... Cerebellar pontine angle and internal auditory canal lipomas Chondroid lipomas are deep-seated, firm, yellow tumors that ...
Craniofacial regeneration
"Early Nerve Grafting for Facial Paralysis After Cerebellopontine Angle Tumor Resection With Preserved Facial Nerve Continuity ...
Melanocytoma
"Primary meningeal melanocytoma of the cerebellopontine angle associated with ipsilateral nevus of Ota: A case report". Surgical ...
Dextroscope
"Preoperative evaluation of neurovascular relationships for microvascular decompression in the cerebellopontine angle in a ... A measurement tool provides accurate measurement of straight and curving 3D structures such as the scalp, and measure angles, ...
Hemifacial spasm
Lee SH, Rhee BA, Choi SK, Koh JS, Lim YJ; Jankovic J (2010). "Cerebellopontine angle tumors causing hemifacial spasm: types, ... only 9 cases were caused by a cerebellopontine angle syndrome, an incidence of 0.44%. The earliest descriptions about ...
Radiosurgery
Planning CT scan with IV contrast in a patient with left cerebellopontine angle vestibular schwannoma ... With a Linac the gantry moves in space to change the delivery angle. Linear accelerator equipment can also move the patient ...
Vestibulocochlear nerve
... at the cerebellopontine angle, and then goes with the 7th nerve through the internal acoustic meatus to the internal ear. The ... and cerebellum that contains the 8th nerve is called the cerebellopontine angle. The vestibulocochlear nerve is accompanied by ...
Ludvig Puusepp
... for a right-sided cerebellopontine angle mass. Over the next twenty years he developed a strong neurological and neurosurgical ...
Central nervous system cyst
They are most commonly found in the area near the pineal gland, the chiasmatic cistern, and the cerebellopontine angle space. ...
Atypical teratoid rhabdoid tumor
In addition, 30% of the AT/RTs are located supratentorially and a predilection exists for the cerebellopontine angle, which ...
Vestibular schwannoma
... they tend to expand into the cerebellopontine angle (CPA), leading to their characteristic "ice-cream-cone like" appearance on ...
Sensorineural hearing loss
Tumor Cerebellopontine angle tumour (junction of the pons and cerebellum) - The cerebellopontine angle is the exit site of both ... non-neoplastic Internal Auditory Canal/CerebelloPontine Angle pathology, including vascular loops, Before examination, a case ...
Ectopic salivary gland tissue
... cerebellopontine angle, soft tissue medial to sternocleidomastoid, stomach, rectum and vulva. Salivary gland neoplasm ...
Index of anatomy articles
... centrum semiovale cephalic cephalic vein cerebellar peduncle cerebellar projection cerebellar tonsil cerebellopontine angle ... canine tooth canthus capillary capitate capitulum caput caput medusae carapace cardiac Cardiac skeleton cardiophrenic angle ... amygdala corticopontine fibers corticospinal tract corticostriate fiber costal cartilages costal margin costophrenic angle ...
Cerebrospinal fluid
... cerebellopontine angle and the adjacent part of the lateral recess), the posterior inferior cerebellar artery (roof and median ...
List of syndromes
... system syndrome Central pain syndrome Cerebellar cognitive affective syndrome Cerebellar stroke syndrome Cerebellopontine angle ...
CPA
... an algorithm for scheduling a set of project activities Cerebellopontine angle, a structure at the margin of the cerebellum and ...
Charles Alfred Ballance
He also did the first operation for complete removal of a cerebellopontine angle tumor, as well as being one of the first ...
Jugular foramen syndrome
Metastatic tumors located at the cerebellopontine angle Trauma Fracture of occipital bone Infections Cholesteatoma (very rare) ...
Vertigo
... tumors present in the cerebellopontine angle such as a vestibular schwannoma or cerebellar tumors,[9][11] epilepsy,[21] ...
Spinal trigeminal nucleus
Cerebellopontine angle. *Superior medullary velum. *Sulcus limitans. *Medial eminence. *Facial colliculus. White: Sensory. * ...
Vestibulospinal tract
Cerebellopontine angle. *Superior medullary velum. *Sulcus limitans. *Medial eminence. *Facial colliculus. White: Sensory. * ...
Medullary striae of fourth ventricle
Cerebellopontine angle. *Superior medullary velum. *Sulcus limitans. *Medial eminence. *Facial colliculus. White: Sensory. * ...
Meningioma
... cerebellopontine angle, and the spinal cord. The tumor is usually gray, well-circumscribed, and takes on the form of the space ...
Category:Mid-importance neurology articles
Talk:Cerebellopontine angle syndrome. *Talk:Cerebral amyloid angiopathy. *Talk:Cerebral atrophy. *Talk:Cerebral contusion ...
Cerebrospinal fluid
... cerebellopontine angle and the adjacent part of the lateral recess), the posterior inferior cerebellar artery (roof and median ...
ಕಪಾಲ ನರಶೂಲೆ - ವಿಕಿಪೀಡಿಯ
Babu R, Murali R (1991). "Arachnoid cyst of the cerebellopontine angle manifesting as contralateral trigeminal neuralgia: case ...
白質 - 维基百科,自由的百科全书
Cerebellopontine angle(英语:Cerebellopontine angle). *Superior medullary velum(英语:Superior medullary velum) ...
List of regions in the human brain
Cerebellopontine angle. *Superior medullary velum. *Sulcus limitans. *Medial eminence. *Facial colliculus. White: Sensory. * ...
Cerebellopontine angle
The cerebellopontine angle is also the site of a set of neurological disorders known as the cerebellopontine angle syndrome. ... The cerebellopontine angle is the site of the cerebellopontine angle cistern one of the subarachnoid cisterns that contains ... The cerebellopontine angle is formed by the cerebellopontine fissure. This fissure is made when the cerebellum folds over to ... The angle formed in turn creates a subarachnoid cistern, the cerebellopontine angle cistern. The pia mater follows the outline ...
Vertigo
... tumors present in the cerebellopontine angle such as a vestibular schwannoma or cerebellar tumors, epilepsy, cervical spine ...
Cerebellopontine angle - Wikipedia
The cerebellopontine angle is also the site of a set of neurological disorders known as the cerebellopontine angle syndrome. ... The cerebellopontine angle is the site of the cerebellopontine angle cistern one of the subarachnoid cisterns that contains ... The cerebellopontine angle is formed by the cerebellopontine fissure. This fissure is made when the cerebellum folds over to ... The angle formed in turn creates a subarachnoid cistern, the cerebellopontine angle cistern. The pia mater follows the outline ...
Cerebellopontine angle syndrome - Wikipedia
The cerebellopontine angle cistern is a subarachnoid cistern formed by the cerebellopontine angle that lies between the ... The cerebellopontine angle syndrome is a distinct neurological syndrome of deficits that can arise due to the closeness of the ... Lesions in the area of cerebellopontine angle cause signs and symptoms secondary to compression of nearby cranial nerves, ... Nedzelski JM (October 1983). "Cerebellopontine angle tumors: bilateral flocculus compression as cause of associated oculomotor ...
Classification of Meningiomas in the Cerebellopontine Angle | SpringerLink
Meningiomas represent the second most common type of neoplasm of the cerebellopontine angle (CPA). Their relationship to ... Schaller B (2003a) Cerebellopontine angle surgery. Part 1: General remarks. HNO 51:284-295CrossRefPubMedGoogle Scholar ... Schaller B (2003b) Cerebellopontine angle surgery. Part 2: Specific remarks. HNO 51:375-385CrossRefPubMedGoogle Scholar ... Hitselberger WE, Gardner G (1968) Other tumors of the cerebellopontine angle. Arch Otolaryngol 88:712-714CrossRefPubMedGoogle ...
Bilateral cerebellopontine angle metastatic melanoma: a case report. - Free Online Library
Bilateral cerebellopontine angle metastatic melanoma: a case report.(Disease/Disorder overview) by Ear, Nose and Throat ... angle+metastatic+melanoma%3a+a+case+report.-a0167254180. *APA style: Bilateral cerebellopontine angle metastatic melanoma: a ... MLA style: "Bilateral cerebellopontine angle metastatic melanoma: a case report.." The Free Library. 2007 Vendome Group LLC 22 ... Rare tumors of the cerebellopontine angle. Otolaryngol Head Neck Surg 1980;88(5):555-9. (4) Arriaga MA, Lo WW, Brackmann DE. ...
Cerebellopontine Angle Ganglioglioma: MR Findings | American Journal of Neuroradiology
Cerebellopontine Angle Ganglioglioma: MR Findings. Jong Won Kwon, In-One Kim, Jung-Eun Cheon, Woo Sun Kim, Je Geun Chi, Kyu- ... Cerebellopontine Angle Ganglioglioma: MR Findings. Jong Won Kwon, In-One Kim, Jung-Eun Cheon, Woo Sun Kim, Je Geun Chi, Kyu- ... Cerebellopontine Angle Ganglioglioma: MR Findings. Jong Won Kwon, In-One Kim, Jung-Eun Cheon, Woo Sun Kim, Je Geun Chi, Kyu- ... Cerebellopontine Angle Ganglioglioma: MR Findings Message Subject (Your Name) has sent you a message from American Journal of ...
Clinical Imaging of the Cerebello-Pontine Angle, Book by Anton Valavanis (Paperback) | chapters.indigo.ca
Buy the Paperback Book Clinical Imaging of the Cerebello-Pontine Angle by Anton Valavanis at Indigo.ca, Canadas largest ... General Principles for the CT Diagnosis of Cerebello-Pontine Angle Lesions.- Pathology of the Cerebello-Pontine Angle.- ... Vascular Lesions of the Cerebello-Pontine Angle.- A. Berry Aneurysms of the Cerebello-Pontine Angle.- 1 General Considerations ... Secondary Tumors of the Cerebello-Pontine Angle.- Magnetic Resonance Imaging of the Cerebello-Pontine Angle.- MRI Examination ...
Vascular loop in the cerebellopontine angle: Clinical-radiological correlation | Radiología (English Edition)
Vascular loop in the cerebellopontine angle: Clinical-radiological correlation Correlación clínico-radiológica del asa vascular ... To correlate the finding of vascular loops in the cerebellopontine angle on imaging with symptoms indicative of ... Inicio Radiología (English Edition) Vascular loop in the cerebellopontine angle: Clinical-radiological correlation ... included all patients evaluated between 2011 and 2017 with findings suggestive of vascular loops in the cerebellopontine angle ...
Hearing loss attributable to a cerebellopontine-angle arachnoid cyst in a child - Inria
We report the case of an 8-year-old girl who presented with hearing loss linked to a pontocerebellar-angle AC which had been ... Hearing loss attributable to a cerebellopontine-angle arachnoid cyst in a child M. Messerer 1 M. Nouri 2 Sylma Diabira 2 Xavier ... Hearing loss attributable to a cerebellopontine-angle arachnoid cyst in a child. Pediatric Neurosurgery, Karger, 2009, 45 (3), ... We report the case of an 8-year-old girl who presented with hearing loss linked to a pontocerebellar-angle AC which had been ...
Clinical Imaging of the Cerebello-Pontine Angle | Springer for Research & Development
Angle masses which are very small and difficult to detect frequently produc ... The cerebello-pontine angle has always posed a challenge to the neurosurgeon, the otoneurosurgeon, and the neuroradiologist. ... The cerebello-pontine angle has always posed a challenge to the neurosurgeon, the otoneurosurgeon, and the neuroradiologist. ... General Principles for the CT Diagnosis of Cerebello-Pontine Angle Lesions Anton Valavanis, Othmar Schubiger, Thomas P. Naidich ...
Neurosurgical Focus Volume 36 Issue v1supplement: Video Atlas - Surgical Approaches to the Cerebellopontine Angle (2014)
An endoscopic assisted retrosigmoid approach to the cerebello-pontine angle for resection of an epidermoid cyst ... Volume 36 (2014): Issue v1supplement (Jan 2014): Video Atlas - Surgical Approaches to the Cerebellopontine Angle. in ... Retrosigmoid approach for resection of cerebellopontine angle meningioma and decompression of the trigeminal nerve ... A stepwise illustration of the retrosigmoid approach for resection of a cerebellopontine meningioma ...
Cerebellopontine angle lipoma | Radiology Case | Radiopaedia.org
the differential would include a dermoid- but these are midline leison and very rare at CP angle. However secondary CP angle ... Cerebellopontine angle lipoma comprise 10% of all intracranial lipoma. ... Cerebellopontine angle lipoma comprise 10% of all intracranial lipoma. the differential would include a dermoid- but these are ... A well defined right cerebellopontine angle mass is seen that is hyperintense on T1 and T2, it is completely suppressed on the ...
Cystic meningioma: cerebellopontine angle | Radiology Case | Radiopaedia.org
MRI screening of the cerebellopontine angle and inner ear with fast spin-echo T2 technique
... Kovacsovics, Bea Linköping ... In patients with unilateral hearing loss and dizziness it is important to rule out a cerebellopontine angle process. This is ... but contrast is necessary for differential diagnostic purposes in patients with alterations in the cerebellopontine angle or in ... FSE T2 weighted images can reliably differentiate between patients with and without pathologies of the cerebellopontine angle. ...
A cerebellopontine angle mouse model for the investigation of tumor biology, hearing, and neurological function in NF2-related...
A cerebellopontine angle mouse model for the investigation of tumor biology, hearing, and neurological function in NF2-related ... In this protocol, we describe how to inject schwannoma cells into the mouse brain cerebellopontine angle (CPA) region. We also ... By studying the disease from every angle, this model offers the potential to unravel the basic biological underpinnings of NF2 ...
Posterior fossa craniotomy for lesions of the cerebellopontine angle in: Journal of Neurosurgery Volume 78 Issue 3 (1993)
cerebellopontine angle; craniotomy; operative exposure; surgical technique; instrumentation Page Count: 508-509 ... Artists drawing showing creation of a free bone flap to gain access to the right cerebellopontine angle. A No. 3 Penfield ... Artists drawing showing creation of a free bone flap to gain access to the right cerebellopontine angle. A No. 3 Penfield ... A safe technique is described for performing a lateral posterior fossa craniotomy to gain access to the cerebellopontine angle ...
Surgical Outcomes of Cerebellopontine Angle Tumors in 48 Cases
| Bangladesh Journal of Neurosurgery
Surgical Outcomes of Cerebellopontine Angle Tumors in 48 Cases * Md Atikur Rahman Associate Professor, Neurosurgery Department ... Keywords: Acoustic schwannoma, Cerebellopontine angle tumors, Retrosigmoid approach. Abstract. Background: Share our ... Materials and Methods: It was a retrospective study of 48 patients (mean age, 45 years) with Cerebellopontine Angle tumors ( ... Rahman, M. A., Hafiz, A., Islam, K. T., Mitra, P. K., Mahmud, E., & Barua, K. K. (2020). Surgical Outcomes of Cerebellopontine ...
Virtual Cisternoscopy: 3D MRI Models of the Cerebellopontine Angle for Lesions Related to the Cranial Nerves
... James D. Rabinov ... Naganawa S, Koshikawa T, Fukatsu H, Ishigaki T, Fukuta T. MR Cisternography of the cerebellopontine angle: comparison of three- ... The authors present a novel magnetic resonance imaging technique for visualizing structures of the cerebellopontine angle from ... in the cerebellopontine angle (CPA). Three patients with symptomatology related to CNs VII and VIII underwent MRI examinations ...
Evaluating the utility of a scoring system for lipomas of the cerebellopontine angle | springermedizin.de
Cerebellopontine angle (CPA) lipomas are elusive lesions representing 0.1-1.5% of intracranial tumors, up to 10% of ... Zamani AA (2000) Cerebellopontine angle tumors: role of magnetic resonance imaging. Top Magn Reson Imaging 11:98-107 PubMed ... Levin JM, Lee JE (1987) Hemifacial spasm due to cerebellopontine angle lipoma: case report. Neurology 37:337-339 PubMedCrossRef ... Lakshmi M, Glastonbury CM (2009) Imaging of the cerebellopontine angle. Neuroimaging Clin N Am 19:393-406 PubMedCrossRef ...
Most recent papers with the keyword cerebellopontine angle lymphoma | Read by QxMD
... lymphoma presenting as bilateral cerebellopontine angle lesions. Imaging showed bilateral cerebellopontine angle lesions and ... and rarely occurs in the cerebello-pontine angle. We report a rare case of primary CNS lymphoma involving the right cerebello- ... Imaging of cerebellopontine angle lesions: an update. Part 2: intra-axial lesions, skull base lesions that may invade the CPA ... Cerebellopontine angle and intracanalicular masses mimicking vestibular schwannomas.. Audrey P Calzada, John L Go, Donald L ...
Cerebellopontine Angle Tumor disease: Malacards - Research Articles, Drugs, Genes, Clinical Trials
MalaCards based summary : Cerebellopontine Angle Tumor, also known as neoplasm of the cerebellopontine angle, is related to ... MalaCards integrated aliases for Cerebellopontine Angle Tumor:. Name: Cerebellopontine Angle Tumor 12 15 71 ... Cerebellopotine Angle MalaCards organs/tissues related to Cerebellopontine Angle Tumor:. 40 Brain, Bone, Salivary Gland, Testes ... Articles related to Cerebellopontine Angle Tumor:. (show top 50) (show all 189) #. Title. Authors. PMID. Year. ...
Primary Glioblastoma of the Cerebellopontine Angle: Case Report and Review of the Literature
... Article information. J Korean ... Wu B, Liu W, Zhu H, Feng H, Liu J. Primary glioblastoma of the cerebellopontine angle in adults. J Neurosurg 114:1288-1293. ... Glioblastoma presenting as an extraaxial mass of cerebellopontine angle (CPA) is very rare in adults. We report a rare case of ... Keywords: Glioblastoma multiforme; Cerebellopontine angle; Extraaxial INTRODUCTION. Glioblastoma multiforme (GBM) is the most ...
Cerebellopontine Angle Primitive Neuroectodermal disease: Malacards - Research Articles, Drugs, Genes, Clinical Trials
Articles related to Cerebellopontine Angle Primitive Neuroectodermal:. #. Title. Authors. PMID. Year. 1. Cerebellopontine angle ... MalaCards based summary : Cerebellopontine Angle Primitive Neuroectodermal, also known as cerebellopontine angle primitive ... MalaCards integrated aliases for Cerebellopontine Angle Primitive Neuroectodermal:. Name: Cerebellopontine Angle Primitive ... Pathways related to Cerebellopontine Angle Primitive Neuroectodermal according to GeneCards Suite gene sharing:. #. Super ...
Cerebellopontine angle tumour - Vital Medic
To most of us it sounds like another "ordinary" brain tumour, but to a neurosurgeon it is what the summit of K2 is to a Himalayan. For Kasia, it turned out to be a sentence that was passed 3 years ago and seemed irreversible. Tests caused by a sudden loss of hearing led to a diagnosis that changed her life forever…. An operation that was performed in 2017 at a renowned center in the north of Poland gave hope for a cure, but as it turned out only 10 percent of the tumour was removed at the time. Follow-up examinations in September 2020 caused Kasias world to fall apart again… It was found that the tumour was beginning to grow and this posed a huge danger.. "Ive sought help all over the country, but both at a major center in Warsaw and others in the country, the doctors have refused to attempt to remove the tumour," - Kasia says ...
Cerebellopontine angle arachnoid cyst containing ectopic choroid plexus--case report. - Physiology, Anatomy and Genetics
This is the first reported case of ectopic choroid plexus at the cerebellopontine angle in an adult. We present the case and ... We present a rare and interesting case of a cerebellopontine angle cyst containing ectopic choroid plexus tissue in a 26 year- ... Cerebellopontine angle arachnoid cyst containing ectopic choroid plexus--case report. Singleton WGB., Lawrence T., Green AL., ... This is the first reported case of ectopic choroid plexus at the cerebellopontine angle in an adult. We present the case and ...
Tic convulsif caused by cerebellopontine angle schwannoma | Yonsei Medical Journal;: 255-257, 2001. | WPRIM
Tic convulsif caused by cerebellopontine angle schwannoma Jhin-Soo PYEN; Kum WHANG; Chul HU; Soon-Ki HONG; Myeong-Sub LEE; Ji- ... A case is presented of painful tic convulsif caused by schwannoma in the cerebellopontine angle (CPA), with right trigeminal ... Cerebellar Neoplasms/complications , Cerebellopontine Angle , Female , Hemifacial Spasm/etiology , Humans , Middle Aged , ... Cerebellopontine Angle / Hemifacial Spasm / Middle Aged / Neurilemmoma Language: English Journal: Yonsei Medical Journal Year: ...
CHRONIC SUBDURAL HEMATOMA IN THE CEREBELLOPONTINE ANGLE
HEMATOMA SUBDURAL CEREBELLOPONTINE ANGLE CHRONIC SURGERY INTRACRANIAL SPACE OCCUPYING LESION HUMAN NEUROLOGY Keyword (es). ... CHRONIC SUBDURAL HEMATOMA IN THE CEREBELLOPONTINE ANGLE. Author. MURTHY VS; DESHPANDE DH; REDDY N. NATIONAL INST. MENTAL HEALTH ... "CHRONIC SUBDURAL HEMATOMA IN THE CEREBELLOPONTINE ANGLE;s:9:\u0000*\u0000jtitle;s:0:;s:9:\u0000*\u0000stitle;s:0 ... "CHRONIC SUBDURAL HEMATOMA IN THE CEREBELLOPONTINE ANGLE;s:8:\u0000*\u0000place;s:0:;s:6:\u0000*\u0000pub;s:0 ...
"Cerebellopontine angle primitive neuroectodermal tumor mimicking trige" by Saad Akhtar Khan, Badar Uddin Ujjan et al.
Primary cerebellopontine angle (CPA) PNET is an extremely rare entity. It is important to have knowledge of this pathology and ... Primary cerebellopontine angle (CPA) PNET is an extremely rare entity. It is important to have knowledge of this pathology and ... Khan, S., Ujjan, B., Salim, A., Shahzad Shamim, M. (2016). Cerebellopontine angle primitive neuroectodermal tumor mimicking ...
The relationship between caloric response, oculomotor dysfunction and size of cerebello-pontine angle tumours - Lund University
The relationship between caloric response, oculomotor dysfunction and size of cerebello-pontine angle tumours. Research output ... Seventy-nine consecutive patients, 70 patients with acoustic neurinomas (ACN) and 9 patients with cerebello-pontine angle ... Adult, Caloric Tests, Cerebellar Neoplasms, Cerebellopontine Angle, Eye Movements, Humans, Meningeal Neoplasms, Meningioma, ... a rough estimate of tumour size as well as to distinguish ACNs from other types of tumours in the cerebello-pontine angle. ...
The relationship between caloric response, oculomotor dysfunction and size of cerebello-pontine angle tumours - Lunds...
The relationship between caloric response, oculomotor dysfunction and size of cerebello-pontine angle tumours. Forskningsoutput ... title = "The relationship between caloric response, oculomotor dysfunction and size of cerebello-pontine angle tumours", ... keywords = "Adult, Caloric Tests, Cerebellar Neoplasms, Cerebellopontine Angle, Eye Movements, Humans, Meningeal Neoplasms, ... and 9 patients with cerebello-pontine angle tumours of other etiology (o-CPA) were analysed with respect to tumour size and the ...
ENDOSCOPY OF THE CEREBELLO-PONTINE ANGLE: AN OVERVIEW
TumorMeningiomaRight cerebellopontineSchwannomaLesions of the cerebellopontine angleCerebello-Pontine AngleTumoursCranialNeoplasmsRemoval of cerebellopontine angleTumors of the cerebellopontineMeningiomasCisternVascularTumourFissureArachnoid cystAuditoryCystAbstractDiagnosisCerebellumChoroidPrimaryLesionAcousticSurgeryCraniotomyFacial NerveSymptomsLipomasCostovertebral angle the angle formedDizzinessPetroclivalSchwannomasPosteriorAnteriorTemporal boneMass
Tumor16
- In reviewing more than 1,000 cases of cerebellopontine angle (CPA) tumor, Brackmann and Bartels found only 3 lesions (0.2%) of metastatic origin. (thefreelibrary.com)
- During the workup for the developmental status, a mass (3 × 4 × 3 cm) was found in the left CP angle, compressing the brain stem ( Fig 1A-C ). A CSF cleft between the mass and the brain stem suggested an extraaxial origin of the tumor. (ajnr.org)
- Cerebellopontine Angle Tumor, also known as neoplasm of the cerebellopontine angle , is related to facial paralysis and neurofibromatosis, type iv, of riccardi . (malacards.org)
- An important gene associated with Cerebellopontine Angle Tumor is SDHD (Succinate Dehydrogenase Complex Subunit D). The drugs Methylprednisolone and Prednisolone have been mentioned in the context of this disorder. (malacards.org)
- Cerebellopontine Angle Primitive Neuroectodermal, also known as cerebellopontine angle primitive neuroectodermal tumor , is related to retroperitoneal neuroblastoma and ectomesenchymoma . (malacards.org)
- Cerebellopontine angle primitive neuroectodermal tumor mimicking trige" by Saad Akhtar Khan, Badar Uddin Ujjan et al. (aku.edu)
- MRI showed a right cerebellopontine angle (CPA) heterogeneous unlimited tumor mimicking an epidermoid cyst. (scirp.org)
- This report describes a case of glioblastoma of the cerebellopontine angle, with local tumor control and diffuse neoplastic seeding of the cervical spinal cord during the follow-up. (clinmedjournals.org)
- Magnetic resonance imaging (Figure 1) revealed a tumor mass in the left cerebellopontine angle, involving left cerebellar hemisphere and the cisternal portion of the VII and VIII cranial nerves. (clinmedjournals.org)
- b) Sequences: Left cerebellopontine angle tumor involving the cerebellar hemisphere and the left acoustic and facial nerves. (clinmedjournals.org)
- A grey-reddish, moderately vascularized tumor was found in the cerebellopontine angle. (clinmedjournals.org)
- Solitary fibrous tumor/hemangiopericytoma in the cerebellopontine angle mimicking vestibular schwannoma: A case report and literature review. (bvsalud.org)
- Primary melanocytic tumor of the cerebellopontine angle mimicking a vestibular schwannoma: case report. (qxmd.com)
- Cerebellopontine angle meningeal melanocytoma: a rare tumor in an uncommon location. (qxmd.com)
- We present the case of a 63-year-old male who underwent surgical resection of a poorly differentiated small cell carcinoma, likely from a small intestinal primary tumor that metastasized to the cerebellopontine angle CPA. (duhnnae.com)
- Diseases associated with EXOSC1 include Short-Rib Thoracic Dysplasia 13 With Or Without Polydactyly and Cerebellopontine Angle Tumor . (genecards.org)
Meningioma6
- Jackler RK, Lalwani AK (1992) Preoperative differentiation between acoustic neuroma and meningioma of the cerebellopontine angle. (springer.com)
- Various surgical approaches for the removal of meningioma and trigeminal schwannoma in the petroclival junction (PCJ) and anterior cerebellopontine area (CPA) have been described previously. (springer.com)
- A case of choroid plexus papilloma resembling meningioma of cerebellopontine (CP) angle with its extension to foramen magnum is presented. (who.int)
- Simultaneously occurring multiple primary brain tumors of different histological types are rare, and the coexistence of schwannoma and meningioma in the same cerebellopontine angle (CPA) without neurofibromatosis is extremely rare. (qxmd.com)
- Rare case of radiologically distinct but pathologically admixed vestibular schwannoma and meningioma in the cerebellopontine angle: A case report. (qxmd.com)
- Cerebellopontine angle meningioma associated with cranial accessory nerve neurinoma--case report. (qxmd.com)
Right cerebellopontine3
- An extra-axial mass in the right cerebellopontine angle with a prominent central cyst. (radiopaedia.org)
- Artist's drawing showing creation of a free bone flap to gain access to the right cerebellopontine angle. (thejns.org)
- Pre-operative Magnetic resonance imaging (MRI) of the brain demonstrated a heterogeneous solid extra-axial lesion, in the right cerebellopontine angle with hydrocephalus. (irjns.org)
Schwannoma5
- In this protocol, we describe how to inject schwannoma cells into the mouse brain cerebellopontine angle (CPA) region. (nih.gov)
- Acoustic schwannoma, Cerebellopontine angle tumors, Retrosigmoid approach. (banglajol.info)
- It was a retrospective study of 48 patients (mean age, 45 years) with Cerebellopontine Angle tumors (predominantly acoustic schwannoma) who underwent surgical removal and one year post-operative follow up. (banglajol.info)
- A case is presented of painful tic convulsif caused by schwannoma in the cerebellopontine angle (CPA), with right trigeminal neuralgia and ipsilateral hemifacial spasm . (bvsalud.org)
- The T2W-images show a schwannoma located in the cerebellopontine angle (CPA). (radiologyassistant.nl)
Lesions of the cerebellopontine angle1
- Vestibular schwannomas (acoustic neuromas) account for 80% of all lesions of the cerebellopontine angle (CPA). (mhmedical.com)
Cerebello-Pontine Angle11
- The cerebello-pontine angle has always posed a challenge to the neurosurgeon, the otoneurosurgeon, and the neuroradiologist. (indigo.ca)
- CT Examination: Techniques for Evaluation of the Cerebello-Pontine Angle. (indigo.ca)
- 3 Physical and Technical Limitations of CT Examination of the Cerebello-Pontine Angle. (indigo.ca)
- CT Anatomy of the Cerebello-Pontine Angle. (indigo.ca)
- General Principles for the CT Diagnosis of Cerebello-Pontine Angle Lesions. (indigo.ca)
- Seventy-nine consecutive patients, 70 patients with acoustic neurinomas (ACN) and 9 patients with cerebello-pontine angle tumours of other etiology (o-CPA) were analysed with respect to tumour size and the result of the caloric and oculomotor tests. (lu.se)
- A combined view of the oculomotor and caloric test results offers a possibility to obtain a rough estimate of tumour size as well as to distinguish ACNs from other types of tumours in the cerebello-pontine angle. (lu.se)
- The cerebello-pontine angle (CPA) is an important region in the skull base which can harbour a variety of pathologies. (journalofhearingscience.com)
- Occipital tumour with cerebello-pontine angle manifestation. (bvsalud.org)
- 2. Balasubramanian T. Cerebello-Pontine Angle Tumours Otolaryngologist's Perspective. (radiopaedia.org)
- Simultaneously occurring tumours within the same cerebello-pontine angle: refining literature definitions and proposal for classification. (qxmd.com)
Tumours4
- Tumours can arise in the cerebellopontine angle. (wikipedia.org)
- Cerebellopontine Angle Tumours. (radiopaedia.org)
- Gonçalves-Pereira P, Neto d'Almeida G, Manaças R, Escada P, Taoka T. Surgical proven location of the facial nerve in the vicinity of cerebellopontine angle tumours depicted pre-operatively by tractography. (ipl.pt)
- Purpose/Introduction: To determine the clinical utility of pre-operative diffusion tensor (DT) tractography of the facial nerve in the vicinity of cerebellopontine angle (CPA) tumours. (ipl.pt)
Cranial5
- The cerebellopontine angle is the site of the cerebellopontine angle cistern one of the subarachnoid cisterns that contains cerebrospinal fluid, arachnoid tissue, cranial nerves, and associated vessels. (wikipedia.org)
- The cerebellopontine angle syndrome is a distinct neurological syndrome of deficits that can arise due to the closeness of the cerebellopontine angle to specific cranial nerves. (wikipedia.org)
- Lesions in the area of cerebellopontine angle cause signs and symptoms secondary to compression of nearby cranial nerves, including cranial nerve V (trigeminal), cranial nerve VII (facial), and cranial nerve VIII (vestibulocochlear). (wikipedia.org)
- This study was conducted to show that high-resolution magnetic resonance imaging (MRI) can aid in the neurosurgical approach to lesions affecting the cranial nerves (CNs) in the cerebellopontine angle (CPA). (pubmedcentralcanada.ca)
- Three cases [ 5 , 10 , 11 ] were primary extra-axial glioblastomas of the cerebellopontine angle arising from the root entry zone of the eighth cranial nerve, whereas in one [ 8 ] the origin was not defined. (clinmedjournals.org)
Neoplasms1
- 12 A brain stem cancer that is characterized by neoplasms in the fossa located in cerebellopotine angle. (malacards.org)
Removal of cerebellopontine angle2
- Share our experiences with a series of surgical removal of cerebellopontine angle with retrosigmoid suboccipital procedure. (banglajol.info)
- To report our experience with a large series of surgical procedures for removal of cerebellopontine angle (CPA) tumors using different approaches. (ac.ir)
Tumors of the cerebellopontine4
- Brackmann DE, Bartels LJ (1980) Rare tumors of the cerebellopontine angel. (springer.com)
- Hitselberger WE, Gardner G (1968) Other tumors of the cerebellopontine angle. (springer.com)
- Background Synchronous tumors of the cerebellopontine angle (CPA) are very rare and inconsistently described. (elsevier.com)
- Meningiomas, epidermoids, and other nonacoustic tumors of the cerebellopontine angle. (mhmedical.com)
Meningiomas3
- Meningiomas represent the second most common type of neoplasm of the cerebellopontine angle (CPA). (springer.com)
- Vestibular schwannomas, cerebellopontine angle meningiomas, trigeminal neuralgia, epidermoid tumors, hemifacial spasms, and aneurysms are some of the skull base pathologies in which the endoscope can be helpful giving additional information on the target. (intechopen.com)
- Management of cerebellopontine angle meningiomas and the posterior part of the temporal bone. (elidee.com)
Cistern6
- The angle formed in turn creates a subarachnoid cistern, the cerebellopontine angle cistern. (wikipedia.org)
- The pia mater follows the outline of the fissure and the arachnoid mater continues across the divide so that the subarachnoid space is dilated at this area, forming the cerebellopontine angle cistern. (wikipedia.org)
- The cerebellopontine angle cistern is a subarachnoid cistern formed by the cerebellopontine angle that lies between the cerebellum and the pons. (wikipedia.org)
- This interactive method allows the model to be visualized from any angle, including that of a standard skull base approach of suboccipital craniotomy for access to the CPA cistern. (pubmedcentralcanada.ca)
- The cerebellopontine angle cistern , also known as the pontocerebellar cistern , is a triangular CSF -filled subarachnoid cistern that lies between the anterior surface of the cerebellum and the lateral surface of the pons . (radiopaedia.org)
- The grade of CSF-related artifacts were scored through observing the perimedullary cistern, cerebellopontine angle cisterns, fourth ventricule, prepontine cistern, suprasellar cistern, ambient cisterns, sylvian fissures, third ventricle and lateral ventricles. (nih.gov)
Vascular7
- To correlate the finding of vascular loops in the cerebellopontine angle on imaging with symptoms indicative of vestibulocochlear involvement. (elsevier.es)
- This retrospective descriptive study included all patients evaluated between 2011 and 2017 with findings suggestive of vascular loops in the cerebellopontine angle for whom the clinical history and imaging studies were available. (elsevier.es)
- 3 , 6 The purpose of this study is to show that high-resolution 3D models based on MRI data can produce an interactive model to aid in planning the neurosurgical approach to vascular and neoplastic lesions affecting the CNs in the cerebellopontine angle (CPA). (pubmedcentralcanada.ca)
- Vascular loops at the cerebellopontine angle: Is there a correlation with tinnitus? (mendeley.com)
- The purpose of this study was to investigate the causative effect of the vascular loop and compression of the vestibulocochlear nerve at the cerebellopontine angle in patients with unexplained tinnitus. (mendeley.com)
- The anatomic type of vascular loop, the vascular contact, and the angulation of the vestibulocochlear nerve at the cerebellopontine angle (CPA) were evaluated by 2 experienced neuroradiologists. (mendeley.com)
- BACKGROUND: Vascular loops of the anterior-inferior cerebellar artery (AICA) at the cerebellopontine angle (CPA) are considered related to auditory-vestibular symptoms. (erdogan.edu.tr)
Tumour1
- Occurrence of this tumour in CP angle is very rare. (who.int)
Fissure4
- The cerebellopontine angle is formed by the cerebellopontine fissure. (wikipedia.org)
- This fissure is made when the cerebellum folds over to the pons, creating a sharply defined angle between them. (wikipedia.org)
- Objective: Cerebellopontine angle (CPA) and cerebellomedullary fissure (CMF) tumors are rare in children and information is scarce in the literature. (northwestern.edu)
- It is formed by union of several veins, including the transverse pontine vein, vein of the middle cerebellar peduncle, vein of the cerebellopontine fissure, the pontine trigeminal vein, and anterior lateral marginal vein. (neurosurgicalatlas.com)
Arachnoid cyst1
- Cerebellopontine angle arachnoid cyst containing ectopic choroid plexus--case report. (ox.ac.uk)
Auditory2
- DIAGNOSES WHO grade II SFT/HPC originating from the internal auditory canal in the left cerebellopontine angle . (bvsalud.org)
- The angle made by lines from the nasal spine and external auditory meatus meeting between the upper middle incisor teeth. (tabers.com)
Cyst1
- We present a rare and interesting case of a cerebellopontine angle cyst containing ectopic choroid plexus tissue in a 26 year-old female. (ox.ac.uk)
Abstract1
- abstract = "The authors present an extremely rare case of a fibrotic nodule arising from the cerebellopontine (CP) angle. (elsevier.com)
Diagnosis1
- The possibility of a glioblastoma should be considered in the differential diagnosis of malignant cerebellopontine angle tumors. (clinmedjournals.org)
Cerebellum4
- The cerebellopontine angle (CPA) (Latin: angulus cerebellopontinus) is located between the cerebellum and the pons. (wikipedia.org)
- Previously, two cases of CP angle ganglioglioma were reported and were found to have originated from the cerebellum (4) . (ajnr.org)
- The angle between the cerebellum and the pons, a common site for the growth of acoustic neuromas (vestibular schwanomas). (sahealth.com)
- The angle formed by the junction of the cerebellum and the pons. (tabers.com)
Choroid3
- This is the first reported case of ectopic choroid plexus at the cerebellopontine angle in an adult. (ox.ac.uk)
- IMSEAR at SEARO: Choroid plexus papilloma of cerebellopontine angle with extension to foramen magnum. (who.int)
- A case of primary choroid plexus papilloma of the cerebellopontine (CP) angle is described in a 28-year-old man. (nebraska.edu)
Primary7
- Primary central nervous system lymphoma (PCNSL) is an uncommon extranodal manifestation of non-Hodgkin's lymphoma with those presenting at the cerebellopontine angle (CPA) being rare presentations with limited reported cases in the literature. (readbyqxmd.com)
- We report a rare case of a primary central nervous system lymphoma (PCNSL) of the cerebellopontine angle (CPA) with infiltration into the pyramidal tract that initially presented as neurolymphomatosis (NL) of the acoustic nerve. (readbyqxmd.com)
- T-cell primary leptomeningeal lymphoma in cerebellopontine angle. (readbyqxmd.com)
- Cerebellopontine angle involvement in the primary T-cell lymphoma is exceptional. (readbyqxmd.com)
- Primary infratentorial GBM is an uncommon disease in adults and rarely found in cerebellopontine angle (CPA), especially 8 , 10) . (jkns.or.kr)
- Primary cerebellopontine angle (CPA) PNET is an extremely rare entity. (aku.edu)
- to the best of the authors` knowledge, 70 cases of brain liponeurocytoma have been reported which most of them are located in the cerebellar hemisphere but only 7 case of primary cerebellopontine angle liponeurocytoma have been reported till now. (irjns.org)
Lesion2
- For example, involvement of CN V from a cerebellopontine mass lesion often results in loss of the ipsilateral (same side of the body) corneal reflex (involuntary blink). (wikipedia.org)
- CT scan revealed a large high attenuating lesion in right CP angle with gross hydrocephalus. (nebraska.edu)
Acoustic1
- 5 Herein, we present the first case to our knowledge describing a PMT of the cerebellopontine angle (CPA) masquerading as an acoustic neuroma. (jamanetwork.com)
Surgery5
- Surgery of Cerebellopontine Lesions. (wikipedia.org)
- At surgery, the left cerebellopontine angle was exposed through left suboccipital retrosigmoid approach. (clinmedjournals.org)
- In 17 cases of CP angle tumors (24-43 mm, by MRI) approached suboccipitally, we performed bilateral blink reflexes pre/intra/post surgery. (jivresearch.org)
- Risk Factors for Vagal Palsy following Cerebellopontine Angle Surgery. (hopkinsmedicine.org)
- Prevalence, characteristics, and management of swallowing disorders following cerebellopontine angle surgery. (hopkinsmedicine.org)
Craniotomy1
- A safe technique is described for performing a lateral posterior fossa craniotomy to gain access to the cerebellopontine angle. (thejns.org)
Facial Nerve2
- Intraoperative monitoring (IOM) of facial nerve is routinely recommended in CerebelloPontine Angle (CP Angle) operations. (jivresearch.org)
- Saving facial nerve in CP angle operations has been widely studied but optimum predictive variables have yet to be determined. (jivresearch.org)
Symptoms2
- Summary: We present a case of cerebellopontine (CP) angle ganglioglioma in a young child with developmental delay and no trigeminal nerve symptoms. (ajnr.org)
- Angle masses which are very small and difficult to detect frequently produce symptoms, but may remain silent while growing to exceptional size. (indigo.ca)
Lipomas3
- Cerebellopontine angle lipomas: report of four cases and review of the literature. (radiopaedia.org)
- Cerebellopontine angle (CPA) lipomas are rare, benign, slow-growing masses. (springermedizin.de)
- Amonkar PP, U KK, Patil JA, Merchant SA (1997) Cerebellopontine angle lipomas, multiple pigmented nevi, and temporal lobe hypoplasia: a new neurocutaneous syndrome? (springermedizin.de)
Costovertebral angle the angle formed1
- costovertebral angle the angle formed on either side of the vertebral column between the last rib and the lumbar vertebrae. (thefreedictionary.com)
Dizziness1
- In patients with unilateral hearing loss and dizziness it is important to rule out a cerebellopontine angle process. (diva-portal.org)
Petroclival1
- Central skull base lesions in the petroclival junction (PCJ) and anterior cerebellopontine area (CPA) can be challenging for surgeons to access because of their position and relation to the brainstem. (springer.com)
Schwannomas1
- Cerebellopontine angle and intracanalicular masses mimicking vestibular schwannomas. (qxmd.com)
Posterior2
- angle of jaw the junction of the lower edge with the posterior edge of the lower jaw. (thefreedictionary.com)
- The angle formed by the junction of the lateral and posterior borders of the acromion. (tabers.com)
Anterior5
- The anterior inferior cerebellar artery (AICA) is the principal vessel of the cerebellopontine angle. (wikipedia.org)
- filtration angle ( angle of the iris ) the angle between the iris and cornea at the periphery of the anterior chamber of the eye, through which the aqueous humor readily permeates. (thefreedictionary.com)
- the Q angle describes the relationship between the long axis of the femur, measured from the anterior superior ilac spine. (tabers.com)
- The angle between the cornea and iris at the periphery of the anterior chamber of the eye. (tabers.com)
- The angle formed at the anterior nasal spine by the intersection of lines drawn from the auricular point and the glabella. (tabers.com)
Temporal bone2
- Lesions of the temporal bone and cerebellopontine angle present a diagnostic challenge because of the complex anatomy, multiplicity of lesions, and difficulty in imaging the dense bone of this area. (jamanetwork.com)
- Maslan MJ, Latack JT, Kemink JL, Graham MD. Magnetic Resonance Imaging of Temporal Bone and Cerebellopontine Angle Lesions. (jamanetwork.com)
Mass5
- MR imaging demonstrated a mass of homogeneous low signal intensity in the left CP angle on T1-weighted images with no enhancement with gadolinium, and of relatively homogeneous high signal intensity on T2-weighted images. (ajnr.org)
- B, Precontrast T1-weighted axial MR image (366/11/3) shows a homogeneous low signal intensity mass in left CP angle compressing the brain stem. (ajnr.org)
- Glioblastoma presenting as an extraaxial mass of cerebellopontine angle (CPA) is very rare in adults. (jkns.or.kr)
- Initial magnetic resonance imaging scans with axial enhanced T1-weighted (A) and T2-weighted (B) images, showing the mass in the left cere-bellopontine angle with broad base to the petrous bone (arrows). (jkns.or.kr)
- Computed tomography revealed a high-density mass in the left CP angle with little enhancement after intravenous administration of contrast media. (elsevier.com)