Trigeminal schwannomas: experience with 68 cases.
Trigeminal schwannomas (TS) are rare. Only a couple of series involving a large number of cases have been reported. In the present study we aimed to analyse the clinical characteristics of TS, the surgical approaches used to treat TS, and the outcomes for patients undergoing surgical treatment for TS via retrospective analysis of departmental records. Data for 68 patients treated for TS in the Department of Neurosurgery at the All India Institute of Medical Sciences between January 1993 and December 2005 were analysed. Most patients were in the fourth decade of life, with the duration of symptoms ranging from 1 month to 13 years. Twenty-nine TSs were classified as type A, 13 as type B and 26 as type C, depending upon size. A skull base approach was used in every surgically treated case. Of the 46 patients for whom radiological follow-up data were available, complete tumour excision was achieved in 35 cases (76%). Follow-up ranged from 3 months to 12 years (mean 62 months). One patient died and nine (15%) had permanent morbidity in the form of corneal opacity (5) or facial (2) or trochlear (2) nerve palsy. We conclude that trigeminal neuromas are best treated by total surgical resection, which yields acceptable results with low rates of mortality and permanent morbidity.
Sharma
Bhawani Shankar
BS
Department of Neurosurgery, All India Institute of Medical Sciences, New Delhi 110 029, India. drsharmabs@yahoo.com
Ahmad
Faiz Uddin
FU
Chandra
Poodipedi Sarat
PS
Mahapatra
Ashok Kumar
AK
D000293:Adolescent; D000328:Adult; D035301:Cranial Fossa, Middle / Q000473:pathology / Q000503:physiopathology / Q000601:surgery; D003390:Cranial Nerve Neoplasms / Q000473:pathology / Q000503:physiopathology / Q000601:surgery*; D003399:Craniotomy / Q000379:methods; D019299:Decompression, Surgical / Q000379:methods; D020220:Facial Nerve Injuries / Q000401:mortality / Q000517:prevention & control; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D009442:Neurilemmoma / Q000473:pathology / Q000503:physiopathology / Q000601:surgery*; D019635:Neurosurgical Procedures / Q000379:methods; D011183:Postoperative Complications / Q000209:etiology / Q000401:mortality / Q000503:physiopathology; D016634:Radiosurgery / Q000379:methods; D012189:Retrospective Studies; D014276:Trigeminal Nerve / Q000473:pathology / Q000503:physiopathology / Q000601:surgery*; D020433:Trigeminal Nerve Diseases / Q000473:pathology / Q000503:physiopathology / Q000601:surgery*; D020432:Trochlear Nerve Diseases / Q000401:mortality / Q000517:prevention & control