Central Nervous System Cysts: Congenital or acquired cysts of the brain, spinal cord, or meninges which may remain stable in size or undergo progressive enlargement.Cysts: Any fluid-filled closed cavity or sac that is lined by an EPITHELIUM. Cysts can be of normal, abnormal, non-neoplastic, or neoplastic tissues.Central Nervous System: The main information-processing organs of the nervous system, consisting of the brain, spinal cord, and meninges.Central Nervous System Diseases: Diseases of any component of the brain (including the cerebral hemispheres, diencephalon, brain stem, and cerebellum) or the spinal cord.Cyst Fluid: Liquid material found in epithelial-lined closed cavities or sacs.Central Nervous System Neoplasms: Benign and malignant neoplastic processes that arise from or secondarily involve the brain, spinal cord, or meninges.Ovarian Cysts: General term for CYSTS and cystic diseases of the OVARY.Nervous System: The entire nerve apparatus, composed of a central part, the brain and spinal cord, and a peripheral part, the cranial and spinal nerves, autonomic ganglia, and plexuses. (Stedman, 26th ed)Epidermal Cyst: Intradermal or subcutaneous saclike structure, the wall of which is stratified epithelium containing keratohyalin granules.Liposarcoma, Myxoid: A liposarcoma containing myxomatous tissue. (Dorland, 27th ed)Dictionaries, MedicalDictionaries as Topic: Lists of words, usually in alphabetical order, giving information about form, pronunciation, etymology, grammar, and meaning.Dictionaries, ChemicalVitreous Hemorrhage: Hemorrhage into the VITREOUS BODY.Neuroendoscopy: PROCEDURES that use NEUROENDOSCOPES for disease diagnosis and treatment. Neuroendoscopy, generally an integration of the neuroendoscope with a computer-assisted NEURONAVIGATION system, provides guidance in NEUROSURGICAL PROCEDURES.Colloid Cysts: Benign, congenital, neuroepithelial cysts that are typically filled with a viscous mucus. They usually arise in the anterior portion of the THIRD VENTRICLE between the fornices.Third Ventricle: A narrow cleft inferior to the CORPUS CALLOSUM, within the DIENCEPHALON, between the paired thalami. Its floor is formed by the HYPOTHALAMUS, its anterior wall by the lamina terminalis, and its roof by EPENDYMA. It communicates with the FOURTH VENTRICLE by the CEREBRAL AQUEDUCT, and with the LATERAL VENTRICLES by the interventricular foramina.Colloids: Two-phase systems in which one is uniformly dispersed in another as particles small enough so they cannot be filtered or will not settle out. The dispersing or continuous phase or medium envelops the particles of the discontinuous phase. All three states of matter can form colloids among each other.Ventriculostomy: Surgical creation of an opening in a cerebral ventricle.Clinical Trials, Phase I as Topic: Works about studies performed to evaluate the safety of diagnostic, therapeutic, or prophylactic drugs, devices, or techniques in healthy subjects and to determine the safe dosage range (if appropriate). These tests also are used to determine pharmacologic and pharmacokinetic properties (toxicity, metabolism, absorption, elimination, and preferred route of administration). They involve a small number of persons and usually last about 1 year. This concept includes phase I studies conducted both in the U.S. and in other countries.TexasRetrospective Studies: Studies used to test etiologic hypotheses in which inferences about an exposure to putative causal factors are derived from data relating to characteristics of persons under study or to events or experiences in their past. The essential feature is that some of the persons under study have the disease or outcome of interest and their characteristics are compared with those of unaffected persons.Brain Neoplasms: Neoplasms of the intracranial components of the central nervous system, including the cerebral hemispheres, basal ganglia, hypothalamus, thalamus, brain stem, and cerebellum. Brain neoplasms are subdivided into primary (originating from brain tissue) and secondary (i.e., metastatic) forms. Primary neoplasms are subdivided into benign and malignant forms. In general, brain tumors may also be classified by age of onset, histologic type, or presenting location in the brain.Cancer Care Facilities: Institutions specializing in the care of cancer patients.Treatment Outcome: Evaluation undertaken to assess the results or consequences of management and procedures used in combating disease in order to determine the efficacy, effectiveness, safety, and practicability of these interventions in individual cases or series.Steatorrhea: A condition that is characterized by chronic fatty DIARRHEA, a result of abnormal DIGESTION and/or INTESTINAL ABSORPTION of FATS.Hemangioblastoma: A benign tumor of the nervous system that may occur sporadically or in association with VON HIPPEL-LINDAU DISEASE. It accounts for approximately 2% of intracranial tumors, arising most frequently in the cerebellar hemispheres and vermis. Histologically, the tumors are composed of multiple capillary and sinusoidal channels lined with endothelial cells and clusters of lipid-laden pseudoxanthoma cells. Usually solitary, these tumors can be multiple and may also occur in the brain stem, spinal cord, retina, and supratentorial compartment. Cerebellar hemangioblastomas usually present in the third decade with INTRACRANIAL HYPERTENSION, and ataxia. (From DeVita et al., Cancer: Principles and Practice of Oncology, 5th ed, pp2071-2)Aminolevulinic Acid: A compound produced from succinyl-CoA and GLYCINE as an intermediate in heme synthesis. It is used as a PHOTOCHEMOTHERAPY for actinic KERATOSIS.Lasers, Semiconductor: Lasers with a semiconductor diode as the active medium. Diode lasers transform electric energy to light using the same principle as a light-emitting diode (LED), but with internal reflection capability, thus forming a resonator where a stimulated light can reflect back and forth, allowing only a certain wavelength to be emitted. The emission of a given device is determined by the active compound used (e.g., gallium arsenide crystals doped with aluminum or indium). Typical wavelengths are 810, 1,060 and 1,300 nm. (From UMDNS, 2005)Endocrine Surgical Procedures: Surgery performed on any endocrine gland.Photosensitizing Agents: Drugs that are pharmacologically inactive but when exposed to ultraviolet radiation or sunlight are converted to their active metabolite to produce a beneficial reaction affecting the diseased tissue. These compounds can be administered topically or systemically and have been used therapeutically to treat psoriasis and various types of neoplasms.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)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: A delicate membrane enveloping the brain and spinal cord. It lies between the PIA MATER and the DURA MATER. It is separated from the pia mater by the subarachnoid cavity which is filled with CEREBROSPINAL FLUID.Subarachnoid Space: The space between the arachnoid membrane and PIA MATER, filled with CEREBROSPINAL FLUID. It contains large blood vessels that supply the BRAIN and SPINAL CORD.Subdural Space: Potential cavity which separates the ARACHNOID MATER from the DURA MATER.Syringomyelia: Longitudinal cavities in the spinal cord, most often in the cervical region, which may extend for multiple spinal levels. The cavities are lined by dense, gliogenous tissue and may be associated with SPINAL CORD NEOPLASMS; spinal cord traumatic injuries; and vascular malformations. Syringomyelia is marked clinically by pain and PARESTHESIA, muscular atrophy of the hands, and analgesia with thermoanesthesia of the hands and arms, but with the tactile sense preserved (sensory dissociation). Lower extremity spasticity and incontinence may also develop. (From Adams et al., Principles of Neurology, 6th ed, p1269)Arachnoiditis: Acute or chronic inflammation of the arachnoid membrane of the meninges most often involving the spinal cord or base of the brain. This term generally refers to a persistent inflammatory process characterized by thickening of the ARACHNOID membrane and dural adhesions. Associated conditions include prior surgery, infections, trauma, SUBARACHNOID HEMORRHAGE, and chemical irritation. Clinical features vary with the site of inflammation, but include cranial neuropathies, radiculopathies, and myelopathies. (From Joynt, Clinical Neurology, 1997, Ch48, p25)Hydrocephalus: Excessive accumulation of cerebrospinal fluid within the cranium which may be associated with dilation of cerebral ventricles, INTRACRANIAL HYPERTENSION; HEADACHE; lethargy; URINARY INCONTINENCE; and ATAXIA.Dermoid Cyst: A tumor consisting of displaced ectodermal structures along the lines of embryonic fusion, the wall being formed of epithelium-lined connective tissue, including skin appendages, and containing keratin, sebum, and hair. (Stedman, 25th ed)Ethmoid Bone: A light and spongy (pneumatized) bone that lies between the orbital part of FRONTAL BONE and the anterior of SPHENOID BONE. Ethmoid bone separates the ORBIT from the ETHMOID SINUS. It consists of a horizontal plate, a perpendicular plate, and two lateral labyrinths.Mouth FloorOrbital Neoplasms: Neoplasms of the bony orbit and contents except the eyeball.Subthalamic Nucleus: Lens-shaped structure on the inner aspect of the INTERNAL CAPSULE. The SUBTHALAMIC NUCLEUS and pathways traversing this region are concerned with the integration of somatic motor function.Deep Brain Stimulation: Therapy for MOVEMENT DISORDERS, especially PARKINSON DISEASE, that applies electricity via stereotactic implantation of ELECTRODES in specific areas of the BRAIN such as the THALAMUS. The electrodes are attached to a neurostimulator placed subcutaneously.Parkinson Disease: A progressive, degenerative neurologic disease characterized by a TREMOR that is maximal at rest, retropulsion (i.e. a tendency to fall backwards), rigidity, stooped posture, slowness of voluntary movements, and a masklike facial expression. Pathologic features include loss of melanin containing neurons in the substantia nigra and other pigmented nuclei of the brainstem. LEWY BODIES are present in the substantia nigra and locus coeruleus but may also be found in a related condition (LEWY BODY DISEASE, DIFFUSE) characterized by dementia in combination with varying degrees of parkinsonism. (Adams et al., Principles of Neurology, 6th ed, p1059, pp1067-75)Gene Transfer Techniques: The introduction of functional (usually cloned) GENES into cells. A variety of techniques and naturally occurring processes are used for the gene transfer such as cell hybridization, LIPOSOMES or microcell-mediated gene transfer, ELECTROPORATION, chromosome-mediated gene transfer, TRANSFECTION, and GENETIC TRANSDUCTION. Gene transfer may result in genetically transformed cells and individual organisms.Globus Pallidus: The representation of the phylogenetically oldest part of the corpus striatum called the paleostriatum. It forms the smaller, more medial part of the lentiform nucleus.Antiparkinson Agents: Agents used in the treatment of Parkinson's disease. The most commonly used drugs act on the dopaminergic system in the striatum and basal ganglia or are centrally acting muscarinic antagonists.Subthalamus: A transition zone in the anterior part of the diencephalon interposed between the thalamus, hypothalamus, and tegmentum of the mesencephalon. Components of the subthalamus include the SUBTHALAMIC NUCLEUS, zona incerta, nucleus of field H, and the nucleus of ansa lenticularis. The latter contains the ENTOPEDUNCULAR NUCLEUS.Phleum: A plant genus of the family POACEAE that contains the Phl p 4 allergen.Neurosurgery: A surgical specialty concerned with the treatment of diseases and disorders of the brain, spinal cord, and peripheral and sympathetic nervous system.WashingtonSyndactyly: A congenital anomaly of the hand or foot, marked by the webbing between adjacent fingers or toes. Syndactylies are classified as complete or incomplete by the degree of joining. Syndactylies can also be simple or complex. Simple syndactyly indicates joining of only skin or soft tissue; complex syndactyly marks joining of bony elements.Poaceae: A large family of narrow-leaved herbaceous grasses of the order Cyperales, subclass Commelinidae, class Liliopsida (monocotyledons). Food grains (EDIBLE GRAIN) come from members of this family. RHINITIS, ALLERGIC, SEASONAL can be induced by POLLEN of many of the grasses.Pollen: The fertilizing element of plants that contains the male GAMETOPHYTES.Spine: The spinal or vertebral column.
Rathke's cleft cysts: surgical-MRI correlation in 16 symptomatic cases. (1/80)
Rathke's cleft cysts (RCCs) are non neoplastic epithelial lesions of the sellar region that have been rarely reported as a clinical entity. We retrospectively reviewed the magnetic resonance imaging (MRI), intraoperative, and pathological findings of a series of 16 cases of RCCs operated at our institution since 1992. Concurrently, we discussed the different hypotheses about their embryological origin. The patients included 12 females and 4 males, 11 to 73 years of age. Endocrine disturbance was the most common presentation, followed by headaches and visual impairment. The location of the cyst was intrasellar in 7 cases, intrasellar and suprasellar in 6 cases, and suprasellar in 3 cases. The size of the cyst ranged from 8 to 26 mm (mean 12 mm). MRI signal intensity was quite variable on T1-weighted images. The cyst appeared hyperintense in 6 cases, hypointense in 6 cases, isointence in 3 cases, and heterogeneous in one case. On T2-weighted images (available in 13 cases), the signal intensity was more constant and appeared hyperintense in 11 cases and hypointense in 2 cases. After Gd-DTPA, we did not observe enhancement either of the cyst contents or of the cyst wall, but only of the pituitary gland in all patient. Most often, the pituitary gland was displaced inferiorly by the cyst located above showing a typical image of "an egg in a cup". Fifteen patients were operated upon via the transsphenoidal approach and one upon a frontal craniotomy. Intraoperatively, the cyst contents were gelatinous or thick, and dark colored. In 2 cases, it was cerebrospinal fluid-like corresponding to the signal observed on MRI. The position of the pituitary gland confirmed by surgery in 15 cases coincided with enhancement seen and MR imaging. In 13 cases where biopsy of the cyst wall was performed, it confirmed focally ciliated columnar or cuboid epithelium. A coexistent adenoma was found in one case. In conclusion, we consider that RCCs have varied MRI characteristics so that no pathognomonic sign may be observed. Except in few cases, there were no correlation between MRI and intraoperative findings. Therefore, even with MRI studies, differential diagnoses with others cystic lesions of the sellar region remains extremely difficult. The most interesting findings on MRI studies of RCCs were to locate the pituitary gland to help the surgeon to preserve pituitary tissue during surgery. (+info)MR imaging findings of Rathke's cleft cysts: significance of intracystic nodules. (2/80)
BACKGROUND AND PURPOSE: Rathke's cleft cysts often may be difficult to differentiate from other intrasellar or suprasellar masses on radiologic studies. The purpose of this study was to describe the significance of intracystic nodules, a diagnostic characteristic found in Rathke's cleft cysts, on MR images. METHODS: A retrospective review of MR studies was conducted for 13 patients who, after pathologic analysis, were diagnosed as having Rathke's cleft cyst. These patients underwent unenhanced and contrast-enhanced T1- and T2-weighted axial and coronal spin-echo sequential imaging. The signal intensity and incidence of the intracystic nodules on T1- and T2-weighted images were analyzed. The signal intensity of the nodule was compared with that of white matter and surrounding cyst fluid. The signal intensity of cyst fluid was compared with the intraoperative appearance of the cyst fluid. Biochemical and pathologic analyses of the intracystic nodules were conducted in two cases. RESULTS: An intracystic nodule having high signal intensity on T1-weighted images and low signal intensity on T2-weighted images was observed in 10 (77%) of the cases. At surgery, intracystic nodules were yellow, waxy, solid masses. Pathologic analysis showed this nodule to be a mucin clump. Biochemical analysis of the intracystic nodules showed cholesterol and proteins as the main constituents. In the Rathke's cleft cyst with intracystic nodules, cyst fluid revealed low signal intensity to isointensity relative to the intensity of the nodules on T1-weighted images, and isointensity to high signal intensity on T2-weighted images. Intracystic nodules were clearly visible on T2-weighted images. CONCLUSION: Because cyst fluid of Rathke's cleft cysts shows variable intensities on MR images, the specific diagnosis is often difficult when based on MR signal intensity values alone. The presence of an intracystic nodule with characteristic signal intensities on MR images may be indicative of the diagnosis of Rathke's cleft cyst. (+info)Colloid cysts of the third ventricle: are MR imaging patterns predictive of difficulty with percutaneous treatment? (3/80)
BACKGROUND AND PURPOSE: Colloid cysts of the third ventricle are rare benign brain tumors. The purpose of this study was to correlate their patterns on MR images with the probability of success of percutaneous treatment. METHODS: Nineteen patients underwent endoscopic treatment for colloid cysts of the third ventricle. The cases were divided into two groups based on difficulty of the aspiration procedure. We reviewed CT scans and MR images and divided cysts into groups based on their signal intensity on the MR images and their density on CT scans. Intensity and density were correlated with difficulty of aspiration during the endoscopic procedure. RESULTS: The aspiration procedure was difficult in 63% of the cases. Eighty-nine percent of hyperdense cysts on unenhanced axial CT scans were categorized as difficult, and 75% of hypodense cysts were categorized as easy. On T2-weighted MR sequences, 100% of low-signal cyst contents were difficult and nearly 63% of high-signal lesions were easy. There was a significant correlation between the T2-weighted sequences and the CT scans regarding the difficulty of the aspiration procedure. CONCLUSION: T2-weighted MR sequences are useful for predicting difficulty of aspiration during stereotactic or endoscopic procedures. A T2-weighted low-signal cyst is correlated with high-viscosity intracystic contents. (+info)CSF flow studies of intracranial cysts and cyst-like lesions achieved using reversed fast imaging with steady-state precession MR sequences. (4/80)
BACKGROUND AND PURPOSE: Differentiating between intracranial cysts or cyst-like structures and communicating or noncommunicating cysts is often not possible with cranial CT or nonfunctional MR imaging. We evaluated a retrospective ECG-gated fast imaging with steady-state precession (PSIF) MR sequence with optional cine mode to differentiate cystic masses from enlarged CSF spaces and to determine the accuracy of detecting communication between cysts and neighboring CSF spaces. METHODS: Fourteen patients with intracranial cystic masses underwent CSF flow studies with an ungated and a retrospective ECG-gated cine-mode PSIF sequence in addition to spin-echo imaging. Findings were evaluated retrospectively by using a five-point rating scale and without knowledge of clinical or other imaging findings. Results were compared with intraoperative findings or with results of intrathecal contrast studies. RESULTS: Eighteen arachnoid cysts and one enlarged cisterna magna were diagnosed. Improved differentiation between cysts and enlarged CSF spaces was obtained with cine-mode PSIF imaging in six lesions (six patients). Increased diagnostic certainty as to communication between cysts and CSF spaces was obtained in 18 cysts (13 patients). Diagnoses were verified by membranectomy in five lesions, by CT cisternography in five lesions, and indirectly by shunting in one cystic lesion. In one case, MR diagnosis was not confirmed by CT cisternography. CONCLUSION: Cine-mode MR imaging with a retrospective ECG-gated flow-sensitive PSIF sequence contributed to the certainty of communication between arachnoid cysts and neighboring CSF spaces with an accuracy of 90%, using surgical findings or intrathecal contrast studies as reference. Differentiation between intracranial cysts and enlargement of CSF spaces and other cystic masses was improved in 25% of cases. (+info)Syndrome of inappropriate secretion of antidiuretic hormone (SIADH) and adrenal insufficiency induced by rathke's cleft cyst: a case report. (5/80)
We report a case of a seventy-year-old woman with syndrome of inappropriate secretion of antidiuretic hormone (SIADH) and adrenal insufficiency induced by Rathke's cleft cyst. She experienced nausea, vomiting, diarrhea, and headache and disturbance of consciousness induced by hyponatremia at a serum sodium level of 100 mEq/l. In spite of severe hyponatremia, urinary sodium excretion was not suppressed and serum osmolality (270 mOsm/kg) was lower than urine osmolality (304 mOsm/kg), and arginine vasopressin (AVP) remained within normal range. SIADH was diagnosed because she was free from other diseases known to cause hyponatremia such as dehydration, cardiac dysfunction, liver dysfunction, renal dysfunction, hypothyroidism, and adrenal insufficiency. Cranial computed tomographic (CT) scan and cranial magnetic resonance (MR) imaging showed a cystic lesion of approximately 2 cm in diameter in the pituitary gland. These images suggested that the cystic lesion was a Rathke's cleft cyst, which was the cause of SIADH. Water restriction therapy normalized her serum sodium concentration and improved her symptoms. After one year, she suffered from general fatigue, appetite loss, fever, and body weight loss (5 kg/2 months). She had neither hypotension nor hypoglycemia, but her serum sodium level was low and serum cortisol, ACTH, and urine free cortisol were very low. Therefore, secondary adrenal insufficiency was suspected and diagnosed by stimulation tests. After start of hydrocortisone replacement therapy (10 mg/day), her symptoms disappeared. In conclusion, Rathke's cleft cyst should be kept in mind as a potential cause in a patient with SIADH, hypopituitarism, and/or adrenal insufficiency. (+info)Congenital destructive hemispheric lesions and epilepsy: clinical features and relevance of associated hippocampal atrophy. (6/80)
We studied the clinical, EEG and MRI findings in 19 patients with epilepsy secondary to congenital destructive hemispheric insults. Patients were divided in two groups: 10 with cystic lesions (group 1), and 9 with atrophic lesions (group 2). Seizure and EEG features, as well as developmental sequelae were similar between the two groups, except for the finding that patients of group 2 more commonly presented seizures with more than one semiological type. MRI showed hyperintense T2 signal extending beyond the lesion in almost all patients of both groups, and it was more diffuse in group 2. Associated hippocampal atrophy (HA) was observed in 70% of group 1 patients and 77.7% of group 2, and it was not correlated with duration of epilepsy or seizure frequency. There was a good concordance between HA and electroclinical localization. The high prevalence of associated HA in both groups suggests a common pathogenesis with the more obvious lesion. Our findings indicate that in some of these patients with extensive destructive lesions, there may be a more circumscribed epileptogenic area, particularly in those with cystic lesions and HA, leading to a potential rationale for effective surgical treatment. (+info)Tentorial enhancement on MR images is a sign of cavernous sinus involvement in patients with sellar tumors. (7/80)
BACKGROUND AND PURPOSE: This study was undertaken to analyze enhancement patterns of the dura around sellar tumors and to compare the results with tumor invasion or compression of the cavernous sinuses. Postoperative enhancement patterns on MR images were compared with preoperative findings. METHODS: Contrast-enhanced coronal and sagittal MR images were examined prospectively in 96 patients with sellar tumors (65 macroadenomas, 15 microadenomas, 14 Rathke cleft cysts, and two chordomas at the sella). All patients underwent surgical treatment, and pre- and postsurgical features on MR images were compared. RESULTS: Presurgical MR images showed dural enhancement in 36.5% of the patients: asymmetric tentorial enhancement in 24 patients, symmetric tentorial enhancement in seven, and sphenoidal ridge or clivus enhancement in four. Asymmetric tentorial enhancement disappeared after surgical decompression in seven patients. For evaluation of cavernous sinus invasion ipsilateral to the enhancement, sensitivity and specificity of the asymmetric tentorial enhancement sign were 81.3% and 86.3%, respectively. Sensitivity and specificity of the sign were 42.9% and 93.6% for cavernous sinus involvement, including compression and invasion. CONCLUSION: Asymmetric tentorial enhancement is a useful sign in the diagnosis of invasion or severe compression of the cavernous sinus by sellar tumor. The sign may represent venous congestion or collateral flow in the tentorium due to obstructed flow in the medial portion of the cavernous sinus. (+info)Intramedullary enterogenous cyst presenting with spastic paraparesis during two consecutive pregnancies: a case report. (8/80)
A 35 year old woman presented with two episodes of spastic paraparesis, occurring in the third trimester of two consecutive pregnancies. The neurological symptoms seemed to be caused by an intramedullary cyst in the thoracic spinal cord. The cyst was subtotally removed and histopathologically diagnosed as enterogenous cyst. Other congenital abnormalities were absent. The peculiar timing of the clinical manifestation of an intramedullary cyst has not been described before. An unequivocal explanation for this phenomenon is missing, but several factors related to pregnancy that may play a part are discussed. (+info)
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Epidermoid cystIntracranialSpinal cordLarvaeColloid cysts of the third ventricleThird ventricleBenignArachnoid membraneType of brain cystDermoid cystLarval cystsHydatid cystsRenalSymptomsNeurocysticercosisDrainage of the cystEndoscopicPancreaticCysticIngestionCerebrospinal fluidLymphomaOccurs when cystsTypes of cystsPeritumoral cystSuprasellarMultiple cystsSubarachnoid spaceAbnormalitiesChoroidOvarian cystEnterogenous cystMeatSoliumFormKidneyAdrenalTumors of the central nervouSymptomaticMusclesTumor cellsTissues and organs
Epidermoid cyst8
- The authors present the case of a 3-year-old girl with a history of chronic headaches, progressive diplopia, and relapsing and remitting mild right hemiparesis who was found to harbor an intrinsic brainstem epidermoid cyst at the pontomedullary junction. (thejns.org)
- After tumor enlargement and progressive symptoms, a diffusion-weighted (DW) magnetic resonance (MR) imaging sequence was performed and a definitive diagnosis of an intrinsic brainstem epidermoid cyst was made in the patient. (thejns.org)
- An axial DW image of the brainstem confirming the clinical suspicion of an epidermoid cyst. (thejns.org)
- Epidermoid cyst is a benign and rare tumor, that evolves slowly. (bireme.br)
- This last feature was in favour of an epidermoid cyst, but the multiplicity of cerebral lesions was definitely not in favor of such a diagnos tic. (bireme.br)
- The surgical strategy consis ted in removal the retro orbital tumor witch was the most acces si ble of both the diagnostic of epidermoid cyst was retaned thanks to the anatomopathology report. (bireme.br)
- The second epidermoid cyst was not removed because of surgical risk, its benign nature and low evolutionary potential. (bireme.br)
- Chordoid Glioma of Third Ventricle With an Epidermoid Cyst: Coexistence or Common Histogenesis? (semanticscholar.org)
Intracranial10
- Hyperdense suprasellar mass: An unusual radiological presentation of intracranial dermoid cyst. (rush.edu)
- Evliyaoglu C, Yuksel M, Gul B, Kaptanoglu E, Yaman M (1998) Growth rate of multiple intracranial hydatid cysts assessed by CT from the time of embolisation. (springer.com)
- Darwazah AK, Zaghari M, Eida M, Batrawy M (2013) Left ventricular endocardial ecchinococcosis associated with multiple intracranial hydatid cysts. (springer.com)
- Simon JA, Olan WJ, Santi M. Intracranial neurenteric cysts: a differential diagnosis and review. (springer.com)
- Intracranial neuroenteric cysts: a concise review including an illustrative patient. (springer.com)
- Diagnosis and management of adult intracranial neurenteric cysts. (springer.com)
- Neurocysticercosis, which involves the central nervous system, is the most severe form of the disease and is often characterized by seizures or increased intracranial pressure . (medscape.com)
- Arachnoid cysts are fluid-filled sacs that occur on the arachnoid membrane that covers the brain (intracranial) and the spinal cord (spinal). (health-cares.net)
- Multiple intracranial epidermoid cysts: Case report]. (bireme.br)
- Arachnoid cyst (AC) is a relatively rare central nervous system malformation representing about 1% of all intracranial masses. (omicsonline.org)
Spinal cord14
- These classification of cysts are embedded in the endoderm (inner layer) and the ectoderm (outer layer) of the cranial or spinal cord germ layers. (wikipedia.org)
- Some cysts in the CNS can be asymptomatic (producing or showing no symptoms), depending on their location in the brain or spinal cord. (wikipedia.org)
- Congenital or acquired cysts of the brain, spinal cord, or meninges which may remain stable in size or undergo progressive enlargement. (rush.edu)
- Cysts affecting the spinal cord are rare, but may result in meningitis or compression of the spinal cord. (rarediseases.org)
- Cysts found in the brain and spinal cord may contain cerebrospinal fluid (CSF), blood, tissue or tumour cells. (cancer.ca)
- The signs and symptoms of a cyst in the brain and spinal cord are the same as those of tumours. (cancer.ca)
- The specific symptoms depend on the location of the cyst and usually appear when the cyst is large enough to affect brain or spinal cord function. (cancer.ca)
- Epidermoid cysts occur more often in the brain than in the spinal cord. (cancer.ca)
- also known as Devic disease ) is an inflammatory disorder of the central nervous system characterized by severe, immune-mediated demyelination and axonal damage, predominantly targeting the optic nerves and spinal cord. (jaoa.org)
- When fibroblasts invade into the spinal cord, astrocytes proliferate to wall them off (because they are foreign to the central nervous system and it is the job of astrocytes to segregate the central nervous system from surrounding tissues). (rutgers.edu)
- 1 ] For a full description of the classification of nervous system tumors and a link to the corresponding treatment summary for each type of brain tumor, refer to the PDQ summary on Childhood Brain and Spinal Cord Tumors Treatment Overview . (cancer.gov)
- An adult central nervous system tumor is a disease in which abnormal cells form in the tissues of the brain and/or spinal cord. (oncolink.org)
- Together, the brain and spinal cord make up the central nervous system (CNS). (oncolink.org)
- I. Neuroanatomy 1) The Brain Cerebral Cortex The Limbic System Basal Ganglia Thalamus Hypothalamus Cerebellum The Brainstem Cranial Nerves 2) Spinal Cord 3) Peripheral Nervous System Sensory Receptors Brachial Plexus Lumbosacral Plexus Autonomic Nervous System Enteric Nervous System 4)Neuro-Ophthalmology 5) Neuro-Otology 6) Neuro-Urology 7) Blood Supply of the Nervous System 8) Development of the Nervous System and Malformations 9) Neurochemistry and Disorders of Neurotransmitter Systems II. (whsmith.co.uk)
Larvae12
- A hydatid cyst is a parasitic illness that is caused by the larvae of Echinococcus granulosus . (springer.com)
- Neurocysticercosis is characterized by the presence of cysticerci (encysted tapeworm larvae) in the central nervous system. (medscape.com)
- These larvae - about 1500 from each female worm - travel through the circulatory system to the heart, then through the blood vessels leading to striated muscle (the muscle of the skeletal system and the heart). (encyclopedia.com)
- Those larvae that reach striated muscle will grow to a length of about one millimeter, coil themselves, and enclose themselves within a protective wall called a cyst. (encyclopedia.com)
- The cyst walls are broken down by the usual process of food digestion in the stomach, allowing the larvae to escape into the new host's intestines. (encyclopedia.com)
- The larvae begin to burrow into the host's muscles and form cysts within two to three weeks of the initial infection. (encyclopedia.com)
- When larvae migrate to the liver, lungs or other organs, they become cysts. (mayoclinic.org)
- Tapeworm cysts sometimes rupture, releasing more larvae, which can move to other organs and form additional cysts. (mayoclinic.org)
- After being eaten the larvae are released from their cysts in the stomach. (wikipedia.org)
- After one week, the females release new larvae that migrate to voluntarily controlled muscles where they form cysts. (wikipedia.org)
- When pigs ingest such eggs via contaminated food, larvae form cysts predominantly in the pig's musculature. (asm.org)
- Both people and pigs can become infected with the larvae or cysts of the parasite by faecal-oral contamination. (scielo.org.za)
Colloid cysts of the third ventricle3
- Anterior transcallosal approach to the colloid cysts of the third ventricle: case series and review of the literature. (biomedsearch.com)
- OBJECTIVES: To evaluate the results of the anterior transcallosal approach to the colloid cysts of the third ventricle. (biomedsearch.com)
- or colloid cysts of the third ventricle. (bioportfolio.com)
Third ventricle4
- The authors report on a patient with Terson's syndrome after endoscopic colloid cyst resection of the third ventricle. (biomedsearch.com)
- Colloid cysts develop in the third ventricle of the brain. (cancer.ca)
- Colloid Cyst, Central Nervous System, Third Ventricle. (thefreedictionary.com)
- The first MRI of the head showed a small colloid cyst in the third ventricle (Figure 1a). (thefreedictionary.com)
Benign6
- A digital myxoid cyst (sometimes called a mucous or mucoid cyst) is an entirely benign swelling that occurs on the fingers or, sometimes, the toes. (thefreedictionary.com)
- Neurenteric cysts are rare benign cystic lesions of the central nervous system derived from the endoderm. (springer.com)
- 1. a benign retention cyst of the breast that shows a pale blue color. (thefreedictionary.com)
- Both benign and malignant tumours may be associated with cysts. (cancer.ca)
- Pathology confirmed the specimen removed as a benign acute and chronically inflamed cystic structure lined by low cuboidal ciliated cells, otherwise known as a typical colloid cyst. (thefreedictionary.com)
- Benign and malignant central nervous system neoplasms derived from glial cells (i.e., astrocytes, oligodendrocytes, and ependymocytes). (bioportfolio.com)
Arachnoid membrane3
- arachnoid cyst a fluid-filled cyst between the layers of the leptomeninges , lined with arachnoid membrane, usually in the sylvian fissure. (thefreedictionary.com)
- An arachnoid cyst is a type of brain cyst that forms due to the splitting of the arachnoid membrane, according to Johns Hopkins Medicine. (reference.com)
- Arachnoid cysts are developmental cysts located on the arachnoid membrane between the brain surface and the cranial base, as reported by New York-Presbyterian Hospital. (livestrong.com)
Type of brain cyst1
- Arachnoid cysts are the most common type of brain cyst. (hopkinsmedicine.org)
Dermoid cyst2
- Kuyumcu G, Jhaveri M. Ruptured Spinal Dermoid Cyst. (rush.edu)
- MRI demonstrates essentially the same findings and presumed diagnosis of dermoid cyst was made. (radiopaedia.org)
Larval cysts3
- The natural lifecycle of T. solium tapeworms completes when a human eats pork contaminated by T. solium larval cysts because these can then develop into adult egg-producing intestinal tapeworms. (cdc.gov)
- Cysticercosis is a rare infectious disease caused by the presence and accumulation of the larval cysts of a tapeworm (cestode) within tissues of the body. (rarediseases.org)
- There they encyst and develop into larval cysts called cysticerci. (rarediseases.org)
Hydatid cysts6
- Hydatid cysts occur in the liver in 75% and in the lungs in 15% of cases. (springer.com)
- Hydatid cysts are rarely located in the central nervous system. (springer.com)
- Iplikçioğlu AC, Ozer AF, Benli K, Işik N, Erbengi A (1989) Multiple cerebral hydatid cysts: report of two cases. (springer.com)
- Karadağ O, Gürelik M, Özüm U, Göksel HM (2004) Primary multiple cerebral hydatid cysts with unusual features. (springer.com)
- At presentation, 36-40% of hydatid cysts have ruptured or become secondarily infected. (hindawi.com)
- The cysts produced by these embryos are called hydatid cysts, and the infestation of the liver is called hydatid disease. (infoplease.com)
Renal4
- A CECT scan of the abdomen revealed bilateral renal tumors (4 cm on the right side and 1 cm on the left side) and multiple pancreatic cysts ( Figure 1 ). (urotoday.com)
- A CECT scan of the abdomen in 2007 revealed a left, lower pole renal tumor of about 4.3 cm with multiple pancreatic cysts ( Figure 2 ). (urotoday.com)
- Normal renal system development results from reciprocal inductive interactions between the ureteric bud (UB) and the mesenchyme, and is directed by complex interactions among diverse gene regulatory networks. (clinicaladvisor.com)
- UB will outgrow from the nephric duct, a structure formed from within the intermediate mesoderm, invade the mesenchyme and undergo a series of branching events to form the renal collecting system (collecting ducts, renal calyces, pelvis and ureter), whereas the mesenchyme will give rise to all epithelial cells that form nephrons. (clinicaladvisor.com)
Symptoms14
- Symptomatic (producing or showing symptoms) cysts may require surgical removal if they are present in areas where brain damage is unavoidable, or if they produce chronic symptoms disruptive to the quality of life of the patient. (wikipedia.org)
- Arachnoid cysts that do not cause significant mass effect or symptoms, regardless of their size and location do not require treatment. (health-cares.net)
- The symptoms of arachnoid cysts vary depending on its location, notes Johns Hopkins Medicine. (reference.com)
- Cysts that do not cause symptoms or affect surrounding areas do not require treatment. (reference.com)
- If the meat ingested has only a few cysts, then the human host's load of parasites (worm burden) is said to be relatively small, and symptoms will be moderate. (encyclopedia.com)
- A large cyst will typically present with symptoms of obstruction. (reference.com)
- The specific symptoms of neurocysticercosis depend upon the number and location of cysts involved as well as an individual's immune system response. (rarediseases.org)
- Some arachnoid cysts never grow or cause symptoms. (cancer.ca)
- Active surveillance for small cysts that aren't causing symptoms. (cancer.ca)
- It is unusual for pineal cysts to cause signs or symptoms and the cyst usually doesn't grow very large. (cancer.ca)
- When they do grow or cause symptoms, it is either because there has been increased CSF production or bleeding into the cyst. (cancer.ca)
- Symptoms will usually appear 1 to 2 weeks after ingestion of a G. duodenalis cyst. (usda.gov)
- Symptoms depend on the part of the nervous system affected-central, peripheral and/or autonomic nervous system. (livestrong.com)
- Symptoms of an arachnoid cyst include headaches, excessive cerebrospinal fluid collection called hydrocephalus, enlargement of the head, seizures, lack of muscle control and developmental delay. (livestrong.com)
Neurocysticercosis9
- Some cysticerci will migrate to the central nervous system, causing serious sequellae (neurocysticercosis). (cdc.gov)
- Cysticerci can migrate to the central nervous system and cause neurocysticercosis (NCC), which is associated with serious neurological and epileptic manifestations. (cdc.gov)
- T. solium cysts (cysticerci) may affect any area of the body including the brain, a condition known as neurocysticercosis. (rarediseases.org)
- Many individuals with cysticercosis have central nervous system involvement (neurocysticercosis). (rarediseases.org)
- The aim of the study was to identify health sector impediments affecting health systems response to Neurocysticercosis in the districts of Gulu and Amuru. (who.int)
- Despite improvement in the healthcare services in the health sectors, health systems response to Neurocysticercosis in Gulu and Amuru, Northern Uganda is weak with most health facilities operating minimally. (who.int)
- Organizations (WHO) defines health systems as all health systems response to neurocysticercosis (NCC) in organizations, people and actions whose primary intent is the region is limited. (who.int)
- Cysts are often located in the central nervous system (CNS), causing neurocysticercosis (NCC). (scielo.org.za)
- Neurocysticercosis is the most frequently observed parasitosis of the central nervous system worldwide. (scielo.br)
Drainage of the cyst2
- Intraoperative imaging confirmed complete drainage of the cyst (T2 coronal, asterisk). (frontiersin.org)
- Patients undergo CT or MRI scans to determine the necessary treatment option such as craniotomy, minimally invasive endoscopic fenestration, burr hole drainage of the cyst and shunting. (reference.com)
Endoscopic3
- Some examples of cyst removal procedures include: permanent drainage, fenestration, and endoscopic cyst fenestration. (wikipedia.org)
- Terson's syndrome after endoscopic colloid cyst removal: case report and a review of reported complications. (biomedsearch.com)
- In this report, a minimally invasive endoscopic approach to fourth ventricular NCC is described as an effort to use a less invasive procedure to remove the cyst and to treat hydrocephalus.We propose an endoscopic approach trough a frontal transforaminal route which allows removal of the the fourth ventricle cyst and treatment of hydrocephalus as well. (scielo.br)
Pancreatic1
- INTRODUCTION: von Hippel-Lindau disease (vHL disease) is a hereditary disease in which tumors and cysts develop in many organs, in association with central nervous system hemangioblastomas, pheochromocytomas, and pancreatic tumors. (bireme.br)
Cystic2
- Hydatid cyst rupture into the abdomen is a serious complication of cystic hydatid disease of the liver (Cystic Echinococcosis) with an incidence of up to 16% in some series and can result in anaphylaxis or anaphylactoid reactions in up to 12.5% of cases. (hindawi.com)
- Laboratory tests revealed a central diabetes insipidus and the MRI displayed an intra and suprasellar, cystic, slightly contrast enhancing mass (Figure 1 ). (frontiersin.org)
Ingestion1
- Upon ingestion, tapeworm eggs release oncospheres, which invade the intestinal wall and disseminate through the bloodstream to form cysts throughout the body. (cdc.gov)
Cerebrospinal fluid1
- Arachnoid cysts are collections of CSF cerebrospinal fluid contained within the arachnoidal lining of the brain. (health-cares.net)
Lymphoma1
- or lymphoma) or bronchogenic cysts. (brainscape.com)
Occurs when cysts1
- Ocular cysticercosis occurs when cysts form in the eyes. (rarediseases.org)
Types of cysts1
Peritumoral cyst2
- The authors describe the first case in which fluorescence with 5-aminolevulinic acid (5-ALA) was used to diagnose a hemangioblastoma tumor in a peritumoral cyst wall. (thejns.org)
- Edema is a precursor to central nervous system peritumoral cyst formation. (spineuniverse.com)
Suprasellar2
- Graziani N, Dufour H, Figarella-Branger D, Donnet A, Bouillot P, Grisoli F. Do the suprasellar neurenteric cyst, the Rathke cleft cyst and the colloid cyst constitute a same entity? (springer.com)
- Sellar and suprasellar cysts are more likely symptomatic while middle fossa cysts are less likely to be considered symptomatic [ 1 ]. (omicsonline.org)
Multiple cysts2
- The right lobe is involved in 75% of cases [ 2 ], and 20-40% of patients have multiple cysts [ 1 , 4 ]. (hindawi.com)
- Polycystic kidney disease (PKD) is a hereditary condition in which the kidneys develop multiple cysts. (news-medical.net)
Subarachnoid space3
- Extraparynchymal NCC occurs when cysticerci develop in other parts of the nervous system, such as the subarachnoid space, meninges, ventricles, spine, or eyes. (cdc.gov)
- Arachnoid cysts (sometimes called leptomeningeal cysts) start in the subarachnoid space (the space between the arachnoid and pia mater layers of the meninges ). (cancer.ca)
- Presence of cysts in the subarachnoid space is rare. (scielo.org.za)
Abnormalities3
- If no other sonographic abnormalities are present, the choroid plexus cyst is considered isolated. (contemporaryobgyn.net)
- Counseling for a woman after prenatal identification of a fetal choroid plexus cyst should be guided by the presence or absence of other sonographic markers or structural abnormalities, results of maternal screening for risk of trisomy 18 (if performed), and maternal age (Figure 2). (contemporaryobgyn.net)
- In women who screen negative for trisomy 18 (either first- or second-trimester screening) and in whom no other fetal structural abnormalities are visualized on a detailed ultrasound, the finding of an isolated choroid plexus cyst does not require additional genetic testing. (contemporaryobgyn.net)
Choroid15
- When a choroid plexus cyst is identified, the presence of structural malformations and other sonographic markers of aneuploidy should be assessed with a detailed fetal anatomic survey performed by an experienced provider. (contemporaryobgyn.net)
- What are isolated choroid plexus cysts and how common are they? (contemporaryobgyn.net)
- A choroid plexus cyst is a small fluid-filled structure within the choroid of the lateral ventricles of the fetal brain. (contemporaryobgyn.net)
- Sonographically, choroid plexus cysts appear as echolucent cysts within the echogenic choroid (Figure 1). (contemporaryobgyn.net)
- Choroid plexus cysts may be single or multiple, unilateral or bilateral, and most often are less than 1 cm in diameter. (contemporaryobgyn.net)
- What are the major clinical implications of an isolated choroid plexus cyst? (contemporaryobgyn.net)
- A choroid plexus cyst is not considered a structural or functional brain abnormality. (contemporaryobgyn.net)
- 2 The only association of some significance between an isolated choroid plexus cyst and a possible fetal problem is with trisomy 18. (contemporaryobgyn.net)
- Choroid plexus cysts are present in 30% to 50% of fetuses with trisomy 18. (contemporaryobgyn.net)
- Studies from the 1990s reported that the risk of trisomy 18 with isolated choroid plexus cysts was approximately 1 in 200 to 1 in 400. (contemporaryobgyn.net)
- Based on a meta-analysis of 14 studies published before 2000, Ghidini et al suggested utilization of a composite (+) likelihood ratio of 7.09 (95% CI, 3.97-12.18).4 A large, single-center cohort study (N=1111 cases of isolated choroid plexus cyst) published in 2008 reported much lower risk. (contemporaryobgyn.net)
- 7 Given the considerable improvements in imaging technology and aneuploidy screening in recent years, the risk of trisomy 18 in the setting of isolated choroid plexus cysts is now believed to be much lower. (contemporaryobgyn.net)
- When an isolated choroid plexus cyst is detected, how is counseling different for women with a normal screen versus those whose screening indicates increased risk? (contemporaryobgyn.net)
- Counseling should include a discussion of the association between choroid plexus cysts and trisomy 18, and diagnostic testing should be offered. (contemporaryobgyn.net)
- Ultrasound characteristics of choroid plexus cysts (size, complexity, laterality, and persistence) should not be used to further modify risk because these factors do not significantly impact the likelihood of trisomy 18. (contemporaryobgyn.net)
Ovarian cyst1
- Examination revealed a left ovarian cyst which was surgically removed. (degruyter.com)
Enterogenous cyst2
- Giant supratentorial enterogenous cyst: report of a case, literature review, and discussion of pathogenesis. (springer.com)
- enteric cyst ( enterogenous cyst ) a cyst of the intestine arising or developing from some fold or pouch along the intestinal tract. (thefreedictionary.com)
Meat2
- Giardiasis is frequently associated with drinking contaminated water, but some people might get infected by consuming uncooked meat also contaminated with G. duodenalis cysts (the infective stage of the organism). (usda.gov)
- Trichinosis is mainly spread when undercooked meat containing Trichinella cysts is eaten. (wikipedia.org)
Solium4
- We tested stored serum samples from the Centers for Disease Control and Prevention Migrant Serum Bank for antibodies against T. solium cysts by using the enzyme-linked immunoelectrotransfer blot. (cdc.gov)
- Resettlement from regions with known pockets of T. solium tapeworm endemicity, including Southeast Asia, central Asia, and sub-Saharan Africa, is common. (cdc.gov)
- During 2010, we used the classic enzyme-linked immunoelectrotransfer blot for lentil-lectin purified glycoprotein (EITB LLGP) to measure the seroprevalence of antibodies against T. solium cysts among several refugee populations resettled to the United States in previous years. (cdc.gov)
- CNS) with the larval stage of Taenia solium cyst. (who.int)
Form10
- alveolar c's dilatations of pulmonary alveoli, which may fuse by breakdown of their septa to form large air cysts (pneumatoceles). (thefreedictionary.com)
- The worms in the cysts can live for up to ten years in this form. (encyclopedia.com)
- A pig that has been infected with T. spiralis , then, has thousands of cysts lying dormant within its muscles - the very muscles that humans look forward to consuming in the form of pork chops, ham, barbecued ribs, etc. (encyclopedia.com)
- If they migrate out of your intestines, they form cysts in other tissues, such as your lungs, central nervous system or liver. (mayoclinic.org)
- If the environment is not conducive to continued feeding and growth, the amoeba or flagellate will form a cyst. (disabled-world.com)
- In some cases, cysts may form under the skin causing small lumps. (rarediseases.org)
- They likely begin to form when the central nervous system develops, while the baby is still in the womb. (cancer.ca)
- Some of the spinal cords form cysts at the injury site. (rutgers.edu)
- acute pandysautonomia is one form of an autonomic neuropathy, which is a collection of various syndromes and diseases which affect the autonomic neurons of the autonomic nervous system (ANS). (wikipedia.org)
- Researchers at UT Southwestern Medical Center at Dallas have uncovered a link between two cyst-forming diseases that affect the kidneys, a finding that could lead to treatments for both a rare form of diabetes and a common kidney disease. (news-medical.net)
Kidney4
- What is an exophytic kidney cyst? (reference.com)
- Duplex kidney - Kidney has two separate collecting systems with either duplex ureter or a single ureter. (clinicaladvisor.com)
- Autosomal dominant polycystic kidney disease (ADPKD) - Presence of multiple macroscopic cysts in both kidneys, large kidney size. (clinicaladvisor.com)
- Autosomal recessive polycystic kidney disease (ARPKD) - Presence of multiple microscopic cysts in both kidneys, large kidney size. (clinicaladvisor.com)
Adrenal1
Tumors of the central nervou1
- Histological typing of tumors of the central nervous system: World Health Organization. (springer.com)
Symptomatic1
- The rate of cyst growth is variable, ranging from 1 to 5 cm in diameter per year [ 4 ], and cysts are rarely symptomatic until they reach 10 cm in diameter [ 2 ]. (hindawi.com)
Muscles3
- The cysticerci are found in the skeletal and cardiac muscles of the pig and in the muscles and central nervous system of humans. (thefreedictionary.com)
- 7 Seventy-five per cent of patients with NCC have calcified cysts in the muscles. (scielo.org.za)
- Seventy-five per cent of patients with NCC have calcified cyst in the muscles. (scielo.org.za)
Tumor cells1
- The fluorescent cyst consisted of tumor cells. (thejns.org)
Tissues and organs1
- Therefore, in healthy individuals the persistence of T. gondii cysts in tissues and organs does not represent a cause for concern. (asm.org)