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Biomedical subjects

S N Shenoy

Publications and source records attributed to S N Shenoy.

At least 19 recordsLinked to original sources

Spontaneous transdural spread of glioblastoma with atypical presentation.

The dura provides an excellent protection against infiltration by malignant tumours. It is extremely rare for glial tumour cells to infiltrate the dura and subsequently invade adjacent structures. We report an interesting case of glioblastoma of the temporal lobe with spontaneous transdural spread to the skull base and infratemporal fossa. This is the first radiologically documented case of transdural spread of glioblastoma before and after the spread without previous craniotomy.

Brain Neoplasms↗

High dose radiation induced meningioma.

Radiation therapy has played an important integral part in the management of various intracranial rumours. However, radiation has been implicated in the development of intracranial tumours. We describe three cases of radiation-induced meningiomas following high dose cranial irradiation. All these patients developed tumours within the previous radiation field and satisfied the criteria used for the definition of radiation-induced neoplasm. The interval between the irradiation and the onset of meningioma was significantly less in the younger patient. All the cases had several unique features of radiation-induced meningioma including features of atypical meningioma. Two patients developed multiple site meningiomas and one patient developed early recurrence of the tumour. This report confirms that patients exposed to cranial irradiation are at lifelong risk of developing radiation-induced tumours such as meningiomas. Hence these patients require long-term clinical and radiological surveillance to detect occurrence as early as possible.

Adult↗

Cystic trochlear nerve neurinoma mimicking intrinsic brainstem tumour.

Trochlear nerve neurinomas are very rare with less than 20 surgically proved cases reported in the literature. A case of histologically proved cystic trochlear nerve neurinoma, which was mimicking an intrinsic brainstem tumour is reported here. The tumour was totally excised. The clinical features and surgical management are described and the literature reviewed.

Brain Stem Neoplasms↗

Amyloidoma of the craniovertebral junction.

We report a rare case of localized amyloidoma of the craniovertebral junction causing severe myelopathy and respiratory distress and death. The clinical features and the natural history of this rare condition are discussed.

Amyloidosis↗

Cystic olfactory groove schwannoma.

Intracranial schwannoma not related to cranial nerves are unusual and rarely found in the subfrontal region. We report a case of cystic olfactory groove schwannoma in a 55-year- old male, who presented with late onset seizure without raised intracranial pressure. The tumor was excised completely.

Brain Neoplasms↗

Intracranial plasma cell granuloma.

We report two rare cases of primary intracranial plasma cell granuloma. The tumors probably arose from the dura and involved the cerebral parenchyma. These patients presented with clinical features of raised intracranial pressure and there was focal neurological deficit. The management issues are discussed.

Adult↗

Scalp arteriovenous malformations.

AIMS: We discuss our experience with the surgical management of scalp vascular malformation and review the literature on the subject. SETTINGS AND DESIGN: A prospective case-control study of eight patients with scalp vascular malformations admitted to our hospital between 1997 and 2002. METHODS AND MATERIALS: All the patients were investigated with selective internal and external carotid angiography. Depending upon the origin of feeding arteries, the scalp vascular malformations were classified into two categories: Group I: the primary scalp arteriovenous malformations and Group II: secondary venous dilatations. Six patients belonged to Group I and two patients were in Group II. RESULTS: Five patients belonging to Group I underwent successful excision of the arteriovenous malformation. There was no recurrence in this group. Of the two patients in Group II, one patient who had scalp vascular dilatation simulating a primary scalp vascular malformation underwent excision of the lesion. This patient developed severe postoperative brain edema and died. CONCLUSIONS: Primary scalp vascular malformation can be excised safely. However, excision of secondary scalp venous dilatation without treatment of the intracranial component can be dangerous.

Adult↗

Unusual self-inflicted penetrating craniocerebral injury by a nail.

Penetrating injuries of the brain caused by a nail are rare. An interesting case of a patient with schizophrenia who attempted suicide by a self-inflicted penetrating intracranial injury using a nail is reported here. The literature related to this unusual case is reviewed.

Brain Injuries↗

Delayed pharyngo-esophageal perforation: rare complication of anterior cervical spine surgery.

An injury to the pharynx and esophagus is a known complication of anterior cervical spine surgery. Two cases of delayed pharyngo-esophageal perforation following anterior cervical spine surgery that resulted in fistula are presented. We postulate that graft displacement and dislodgement of implant with resulting esophageal erosion was responsible for this complication.

Adolescent↗