1/42. abducens nerve paresis as first symptom of trigeminal neurinoma. Report of two cases and review of the literature.Two cases of neurinoma of the Gasserian ganglion with abducens nerve paresis as the first symptom are described and 27 cases culled from the literature are reviewed. The anatomo-surgical and clinical-radiological features of this pathology were re-assessed in an attempt to identify the pathogenetic mechanism responsible for a trigeminal neurinoma manifesting with VI cranial nerve palsy.- - - - - - - - - - ranking = 1keywords = ganglion (Clic here for more details about this article) |
2/42. facial nerve neurinoma presenting as middle cranial fossa and cerebellopontine angle mass: a case report.facial nerve neurinomas are rare. The tumours arising from the geniculate ganglion may grow anteriorly and superiorly and present as a mass in the middle cranial fossa. Only a few cases of facial nerve neurinomas presenting as middle cranial fossa mass have so far been reported. These tumours present with either long standing or intermittent facial palsy along with cerebellopontine angle syndrome.- - - - - - - - - - ranking = 1keywords = ganglion (Clic here for more details about this article) |
3/42. Schwannoma of the suprascapular nerve presenting with atypical neuralgia: case report and review of the literature.Compressive lesions of the suprascapular nerve produce weakness and atrophy of the supra- and infraspinatus muscles and a poorly defined aching pain along the posterior aspect of the shoulder joint and the adjacent scapula. Entrapment neuropathy of the suprascapular nerve is fairly common whereas tumorous lesions are rare; among the latter ganglion cysts are frequently seen. An isolated solitary schwannoma of the suprascapular nerve presenting with atypical neuralgic pain is exceptional. The location of a schwannoma under the firm deep cervical fascia in the posterior triangle of the neck is implicated in the genesis of neuralgic pains mimicking the suprascapular entrapment syndrome. One such case is reported with discussion of the relevant clinical features.- - - - - - - - - - ranking = 1keywords = ganglion (Clic here for more details about this article) |
4/42. Parasympathetic schwannoma of the submandibular gland.Schwannomas of the submandibular gland have only been documented sporadically throughout the medical literature. We describe a case of schwannoma of the submandibular gland originating from the submandibular branch of the lingual nerve, which carries the preganglionic parasympathetic nerve fibers. The clinical aspect of this tumor is discussed, followed by a brief literature review.- - - - - - - - - - ranking = 1keywords = ganglion (Clic here for more details about this article) |
5/42. Unusual massive neurinoma in the suboccipital region--case report.An 8-year-old boy with no evidence of von Recklinghausen's disease presented with an unusual neurinoma manifesting as a gradually progressive swelling in the suboccipital region over 2 years. The lesion was massive and had widely eroded the posterior aspects of the atlas, axis, and suboccipital bone. The tumor had involved the dura of the sigmoid and transverse sinuses, was highly vascular, and had encased the ipsilateral vertebral artery. The tumor was almost completely resected although with considerable loss of blood through a large rent in the right sigmoid sinus. This unusual benign neurinoma most probably arose from the second cervical ganglion.- - - - - - - - - - ranking = 1keywords = ganglion (Clic here for more details about this article) |
6/42. Angiographic demonstration of a trigeminal neurinoma.The case of a young man with a trigeminal neurinoma arising from the cerebellopontine angle and extending to the Gasserion ganglion is presented and the angiographic findings are described.- - - - - - - - - - ranking = 1keywords = ganglion (Clic here for more details about this article) |
7/42. Neurilemmomas of the forearm and hand.neurilemmoma is the most common tumor arising from peripheral nerves. Although infrequently encountered, it must be included in the differential diagnosis of soft tissue tumors. Because of its cystic consistency, a neurilemmoma in the hand or wrist may be mistaken for a ganglion. In this series of 17 neurilemmomas, 6 were present in the forearm, and 11 were in the hand and wrist. There were 5 tumors in fingers, 1 in the thumb, 3 in the palm, and 2 in the wrist. In the forearm, 3 tumors involved the median nerve, 2 involved the ulnar nerve, and 1 arose from a small sensory branch of the radial nerve. Neurilemmomas arise from a benign proliferation of the schwann cells and rarely disturb the function of the involved nerve. The tumors are well encapsulated and may be easily enucleated from the parent nerve. Resection of the involved nerve is seldom necessary except when small nerves are extensively involved.- - - - - - - - - - ranking = 1keywords = ganglion (Clic here for more details about this article) |
8/42. The bony crescent sign--a new sign of facial nerve schwannoma.Schwannomas of the facial nerve are rare slowly growing lesions that have a predilection for the geniculate ganglion. Radiological evaluation is important in their diagnosis and in the assessment of their extent. In our series of 4 cases the facial nerve schwannoma was seen on high resolution CT as a soft tissue mass bounded anteriorly by a thin rim of bone. This bony crescent sign is a previously undescribed sign of facial nerve schwannoma which appears on the basis of this small series to be strongly indicative of the presence of this tumour. Schwannomas are relatively uncommon intracranial tumours. They most commonly involve the acoustic nerve followed in frequency by the trigeminal nerve. Other cranial nerves are rarely involved. facial nerve schwannomas occurring within the petrous temporal bone are very rare. Their diagnosis may be missed prospectively even when appropriate CT scans are performed. Even in retrospect the site of abnormality may be difficult to identify, especially if there is an associated middle ear mass such as a cholesteatoma. Lesions occurring in the petrous area are all rare. The differential diagnosis includes cholesterol granuloma, epidermoid, carotid aneurysm and, very rarely, primary and secondary bone tumours. We describe a new sign associated with facial nerve schwannoma on CT, that of a bony crescent. Recognition of this sign makes those tumours arising in the region of the geniculate ganglion easy to diagnose prospectively.- - - - - - - - - - ranking = 2keywords = ganglion (Clic here for more details about this article) |
9/42. Neurinoma of the third, fourth, and sixth cranial nerves: a survey and report of a new fourth nerve case.A rare case of trochlear nerve neurinoma is described. Including this case, the number of reported intracranial tumors arising from the sheaths of the third, fourth, and sixth cranial nerves is 38. By site and relationship to the nerve segment, they fall into three groups: cisternal, cisternocavernous, and cavernous. In cisternal tumors of the third and sixth nerves, paresis of the nerve hosting the tumor is the unique nerve deficit; by contrast, in those of the fourth nerve, paresis of the trochlear nerve can be absent and that of the third nerve present. In the latter tumors, a peculiar ataxic hemiparesis syndrome is produced by midbrain compression. Cisternocavernous neurinomas often cause symptoms of intracranial hypertension, while cavernous neurinomas bring about two clinical features: paresis of one or more nerves of the cavernous sinus and a clinicoradiological orbital apex syndrome. At surgery, generally cisternal neurinomas are totally removed and the nerve source of the tumor identified; in cisternocavernous and cavernous neurinomas, total removal of tumor and identification of the parent nerve have been reported in only half of the cases. In the majority of parasellar neurinomas, clinical differences can be found between those arising from the nerves governing eye movement and those arising from the gasserian ganglion.- - - - - - - - - - ranking = 607.46666342773keywords = gasserian ganglion, gasserian, ganglion (Clic here for more details about this article) |
10/42. A rare case of cellular schwannoma involving the trigeminal ganglion.Cellular schwannomas rarely involve the cranial nerves, being more common in the spinal and peripheral nerves. A rare case of cellular schwannoma involving the gasserian ganglion, a hitherto unreported site, that extended infratentorially to present as a cerebellopontine angle tumor is reported. It is important to recognize that cellular schwannomas can histologically mimic malignant peripheral nerve sheath tumors because of their high cellularity and mitotic activity, but they are relatively benign tumors with a tendency to recur but not metastasize.- - - - - - - - - - ranking = 611.46666342773keywords = gasserian ganglion, gasserian, ganglion (Clic here for more details about this article) |
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