• Stereotactic radiosurgery and particulate embolization for cavernous sinus dural arteriovenous fistulae. (nih.gov)
  • Techniques to achieve this result include surgical repair of the damaged portion of the intracavernous internal carotid artery, electrothrombosis, embolization, or balloon occlusion of the fistula. (medscape.com)
  • Dural carotid-cavernous sinus fistulae may close spontaneously, but, for those lesions causing progressive or unacceptable symptoms and signs, standard embolization or endovascular balloon occlusion is generally performed. (medscape.com)
  • A beautiful and important illustration of hidden dangers in spinal dural fistula embolization. (neuroangio.org)
  • Dr. Sharath Kumar GG a Consultant Neuroradiologist with expertise in diagnosing & treating complex neurovascular malformations like aneurysms, AVM, DAVF, Carotid stenosis, preoperative tumor embolization, and carotid cavernous fistula. (neurodoctors.co.in)
  • His specialized areas of neurotreatment are Petrosal Sinus Sampling, Head and neck Tumour Embolization, Brain Dural Arteriovenous Fistula Embolization, Spinal and Cerebral Tumor Embolization, and Brain Arteriovenous Fistula Embolization, etc. (neurodoctors.co.in)
  • For example, embolization of a tumor supplied by the external carotid artery (e.g. meningioma or hemangiopericytoma ) can result in blindness. (radiopaedia.org)
  • He focuses on treating stroke, carotid stenosis, intracranial aneurysms, arteriovenous malformation, pituitary tumors and other skull base tumors. (uky.edu)
  • My clinical practice focuses on patients who are found to have aneurysms, vascular malformations (including AVMs, cavernous malformations, and dural AV fistulas), moyamoya disease, carotid stenosis, chronic subdural hematomas, pseudotumor cerebrii (also called idiopathic intracranial hypertension), and pulsatile tinnitus. (mountsinai.org)
  • citation needed] Direct CCF may be treated by occlusion of the affected cavernous sinus (coils, balloon, liquid agents), or by reconstruction of the damaged internal carotid artery (stent, coils or liquid agents). (wikipedia.org)
  • citation needed] Indirect CCF may be treated by occlusion of the affected cavernous sinus with coils, liquid agents or a combination of both. (wikipedia.org)
  • CTA shows left carotid occlusion. (neuroangio.org)
  • In complete fistula occlusion, false-positive findings were encountered on both T2-weighted images and on TOF MRA images. (ajnr.org)
  • Venous obstruction may be caused by a retrobulbar tumor, thyroid ophthalmopathy, superior vena cava syndrome, congestive heart failure, thrombosis of the cavernous sinus or orbital vein, vasculitis involving the episcleral or orbital vein, and jugular vein obstruction. (medscape.com)
  • Septic thrombosis of the cavernous sinus often results in the development of acute meningitis. (gov.gy)
  • High resolution digital subtraction angiography may help in classifying CCF into dural and direct type and thus formulate a strategy to treat it either by a balloon or coil or both with or without preservation of parent ipsilateral carotid artery. (wikipedia.org)
  • Direct fistulas occur when the Internal Carotid artery (ICA) itself fistulizes into the Cavernous sinus whereas indirect is when a branch of the ICA or External Carotid artery (ECA) communicates with the cavernous sinus. (wikipedia.org)
  • The optimal treatment of a direct carotid-cavernous sinus fistula is closure of the abnormal arteriovenous communication with preservation of internal carotid artery patency. (medscape.com)
  • In vEDS, anatomical and pathophysiological features of the intra-cavernous internal carotid artery make it prone to shunting in the cavernous sinus, due either to a spontaneous rupture or to a spontaneous dissection with pseudoaneurysm formation. (biomedcentral.com)
  • In direct CCF, internal carotid artery (ICA) wall disruption allows high-pressure blood to move into the CS, resulting in short-circuiting of the ICA arterial blood into the venous system of the CS. (biomedcentral.com)
  • The blood does not collect within a preexisting space, but rather creates a space at the Fractures of Cranial Base In fractures of the cranial base, the internal carotid artery may be torn, producing an arteriovenous fistula within the cavernous sinus. (gov.gy)
  • The internal carotid artery (ICA) is the most medial structure and cranial nerves III, IV, and first and second branches of cranial nerve V are located in the lateral wall of the dura. (stanford.edu)
  • 38 In otitis media, infection spreads via the sigmoid sinus and along the internal carotid artery plexus. (stanford.edu)
  • Results The Neuron 6 F 0.053 inch inner luminal diameter delivery catheter (Penumbra) was placed in a very distal location within the internal carotid artery, external carotid artery and venous system enabling successful endovascular treatment of the intracranial pathology with no related neurological complications. (bmj.com)
  • And, to boot, there is a large posterior spinal artery coming off from left T8, across from fistula. (neuroangio.org)
  • In the medial aspect, the lesser wing of the sphenoid forms the anterior clinoid process, an important landmark for the optic nerve and supracavernous internal carotid artery (ICA). (medscape.com)
  • Silent Micro-Infarct in Carotid Artery Stenting: Who Has it and Why? (turkishneurosurgery.org.tr)
  • The accessory meningeal artery (AMA) demonstrates various potential anastomoses with the external (ECA) and internal (ICA) carotid arteries. (nagoya-u.ac.jp)
  • The ophthalmic artery is a branch of the supraclinoid (C6) segment of the internal carotid artery . (radiopaedia.org)
  • The ophthalmic artery arises medial to the anterior clinoid process as the internal carotid artery exits the cavernous sinus . (radiopaedia.org)
  • It originates from the antero- or supero-medial surface of the internal carotid artery. (radiopaedia.org)
  • This type is very difficult to resect because of the absence of the arachnoid plane between the tumor and the internal carotid artery. (medscape.com)
  • Since its approval by FDA in 2011, PED (ev3, USA) has proved its safety and efficacy in the treatment of large and giant intracranial aneurysms from the petrous to the superior hypophyseal segment of the internal carotid artery [ 1 , 2 ]. (biomedcentral.com)
  • Endovascular management of dural carotid-cavernous sinus fistulas in 141 patients. (medscape.com)
  • Digital subtraction angiography (DSA) is the standard of reference for the diagnosis of dural arteriovenous fistula (DAVF) and for tailoring the appropriate treatment either by endovascular and/or surgical means. (ajnr.org)
  • Small-caliber low velocity bullets may intersect skull base, causing significant damage to the brain and a communication between endocranium and paranasal sinuses. (surgicalneurologyint.com)
  • Endoscopic transnasal removal of bullet and foreign body from the paranasal sinuses and orbit has been reported in the literature. (surgicalneurologyint.com)
  • The most important anatomic structures below the anterior cranial fossa are the orbits and the paranasal sinuses. (medscape.com)
  • Occasionally, more direct approaches, such as direct transorbital puncture of the cavernous sinus or cannulation of the draining superior orbital vein are used when conventional approaches are not possible. (wikipedia.org)
  • A cerebral digital subtraction angiography (DSA) enhances visualization of the fistula. (wikipedia.org)
  • Transcranial Doppler ultrasonography in the assessment of cerebral circulation arrest: improving sensitivity by transcervical and transorbital carotid insonation and serial examinations. (scienceopen.com)
  • A posterior condylar emissary vein may also be present, passing through the condylar canal, connecting the sigmoid sinus with the suboccipital venous plexus. (gov.gy)
  • A carotid-cavernous fistula results from an abnormal communication between the arterial and venous systems within the cavernous sinus in the skull. (wikipedia.org)
  • As arterial blood under high pressure enters the cavernous sinus, the normal venous return to the cavernous sinus is impeded and this causes engorgement of the draining veins, manifesting most dramatically as a sudden engorgement and redness of the eye of the same side. (wikipedia.org)
  • Carotid-cavernous fistula (CCF) is an abnormal communication between the high-pressure carotid arterial system and the low-pressure cavernous venous system (CS). (biomedcentral.com)
  • Arterial blood rushes into the cavernous sinus, enlarging it and forcing retrograde blood flow into its venous tributaries, especially the ophthalmic veins. (gov.gy)
  • citation needed] CT scans classically show an enlarged superior ophthalmic vein, cavernous sinus enlargement ipsilateral (same side) as the abnormality and possibly diffuse enlargement of all the extraocular muscles resulting from venous engorgement. (wikipedia.org)
  • Digital subtraction angiography (DSA) is the method of reference for imaging of dural arteriovenous fistula (DAVF). (ajnr.org)
  • Two observers assessed all MR and MRA investigations for signs indicating the presence of a DAVF, for fistula characteristics such as fistula grading, location of fistulous point, and fistula obliteration after treatment. (ajnr.org)
  • On T2-weighted images, signs indicative of a DAVF were encountered only in fistulas with cortical venous reflux (56%), whereas on 3D time-of-flight (TOF) MRA, most fistulas (88%) were correctly detected. (ajnr.org)
  • Spontaneous carotid-cavernous sinus fistulae typically occur in middle-aged to elderly individuals, while traumatic carotid-cavernous sinus fistulae occur most commonly in young persons. (medscape.com)
  • The spontaneous dural cavernous fistula which is more common usually results from a degenerative process in older patients with systemic hypertension and atherosclerosis. (wikipedia.org)
  • Spontaneous resolution of indirect fistulae has been reported but is uncommon. (wikipedia.org)
  • Staged manual compression of the ipsilateral carotid has been reported to assist with spontaneous closure in selected cases. (wikipedia.org)
  • Direct spontaneous carotid-cavernous fistula (sCCF) is reportedly pathognomonic of vEDS. (biomedcentral.com)
  • It is therefore unsurprising that vEDS has been associated with the development of spontaneous direct carotid-cavernous fistula (sCCF). (biomedcentral.com)
  • I find intraoperative CT-guided navigation helpful to identify variant sinus anatomy and critical landmarks, especially for avoiding inadvertent opening of the skull base. (neurosurgicalatlas.com)
  • citation needed] Carotid cavernous fistulae may form following closed or penetrating head trauma, surgical damage, rupture of an intracavernous aneurysm, or in association with connective tissue disorders, vascular diseases and dural fistulas. (wikipedia.org)
  • The innermost part of the dura, the dural border cell layer, is composed of flattened Bulging of Diaphragma Sellae Pituitary tumors may extend superiorly through the aperture in the diaphragma sellae, or cause it to bulge. (gov.gy)
  • The CS is a paired structure on either side of the sella, pituitary gland, and sphenoid sinus. (stanford.edu)
  • Pituitary adenomas frequently invade the cavernous sinus. (go.jp)
  • The oblique transsphenoethmoidal approach, a modified standard transsphenoidal approach, was used to treat 19 patients with pituitary adenomas invading the cavernous sinus. (go.jp)
  • Sensory endings are more numerous in the dura along each side of the superior sagittal sinus and in the tentorium cerebelli than they are in the floor of the cranium. (gov.gy)
  • The posterior wall is thin and adjacent to the superior sagittal sinus and frontal lobe dura. (medscape.com)
  • Denervation within V2 will confirm the need for emergent non-contrast orbital CT to evaluate for a break in the orbital floor and to discount a hemorrhage within the sinus cavities. (reviewofoptometry.com)
  • Dural border hemorrhage usually follows a hard blow to the head that jerks the brain inside the cranium and injures it. (gov.gy)
  • On conventional MR, only a subset of DAVFs, that is high-grade fistulas, DAVFs with accompanying venoclusive disease, and DAVFs with complications, including infarction and hemorrhage, can be identified. (ajnr.org)
  • Long-term complications (i.e., cerebrospinal fluid (CSF) leakage, infections, pseudoaneurism, carotid-cavernous fistula formation) should be considered and prevented after patient's stabilization. (surgicalneurologyint.com)
  • The anterior clinoid processes and the planum sphenoidale, which forms the roof of the sphenoid sinus, mark the posterior limit. (medscape.com)
  • Two different growing patterns of sphenoid wing meningioma have been described: meningioma en masse, forming a nodular space-occupying lesion, and meningioma en plaque, which is flat and demonstrates a carpet-like growth pattern. (medscape.com)
  • Traumatic carotid-cavernous sinus fistulae occur more commonly in males than in females. (medscape.com)
  • cavernous sinus tuberculoma may occur in the absence of pulmonary findings. (stanford.edu)
  • The anterior limit of the anterior skull base is the posterior wall of the frontal sinus. (medscape.com)
  • The inferior aspect of the right orbit has been fractured and the maxillary sinus is opacified in this computed tomography scan, which uses both x-rays and sensors to gather data and make soft tissue visible. (reviewofoptometry.com)
  • Medially, they may expand into the wall of the cavernous sinus, anteriorly into the orbit, and laterally into the temporal bone. (medscape.com)
  • The foramen cecum sits between the frontal crest and the prominent crista galli and is a site of communication between the draining veins of the nasal cavity and the superior sagittal sinus. (medscape.com)
  • There are several important structures that reside in the vicinity of the ganglion: the cavernous sinus, the optic and trochlear nerves medially, the inferior surface of the temporal lobe of the brain superiorly, and the brain stem posteriorly. (asra.com)
  • Type I clinoidal meningiomas originate from the inferomedial surface of the clinoidal process proximal to the distal carotid ring. (medscape.com)
  • Patients with ICE syndrome generally do well with glaucoma filtering surgery, although late failure may develop due to endothelialization of the fistula, which, in some cases, may be reopened with the Nd:YAG laser. (medscape.com)
  • The standard transsphenoidal approach does not provide satisfactory visualization of the cavernous sinus structures. (go.jp)
  • Direct sCCF is rare in the general population as most direct fistulas are posttraumatic but seems to be more common in vEDS patients and especially in females. (biomedcentral.com)
  • The ophthalmologic sequelae of carotid-cavernous sinus fistulas are known and recognizable, but less commonly seen is the rare clival fistula. (escholarship.org)
  • Here we present two cases of clival dAVFs that most likely evolved from carotid-cavernous sinus fistulas. (escholarship.org)
  • Because these venous channels are valveless, compression of the thorax, abdomen, or pelvis, as occurs during heavy coughing and straining, may force venous blood from these regions into the internal vertebral venous system and from it into the dural venous sinuses. (gov.gy)
  • Dural arteriovenous fistulas (dAVFs) may present in a variety of ways, including as carotid-cavernous sinus fistulas. (escholarship.org)
  • On time-resolved 3D contrast-enhanced (TR 3D) MRA, the side and presence of all patent fistulas ( n = 13) were correctly indicated, and no false-positive findings were observed in occluded DAVFs ( n = 5). (ajnr.org)
  • The frontal bone houses the supraorbital foramina, which, along with the frontal sinuses, form 2 important surgical landmarks during approaches involving the anterior skull base. (medscape.com)