[Intrasellar neurinoma. Apropos of a case and review of the literature].
This 67 year-old man experienced the sudden onset of generalized headache followed by visual troubles. Examination showed a poor visual acuity of the right eye with a palsy of the right third nerve and signs of panhypopituitarism confirmed by endocrinologic testing. CT- scan and MRI showed a large sellar tumor with a necrotic portion in the middle, so that the pre-operative diagnosis was: pituitary adenoma. The tumor was removed through a trans-sphenoïdal approach. The pathologic diagnosis was benign schwannoma. A review of the literature showed that this was the second reported case of an intra sellar schwannoma mimicking a pituitary adenoma clinically as well as radiologically. Surgical removal of these lesions by a trans-sphenoïdal approach seems to be more difficult than for an adenoma. The histopathogenic origin of such tumors could be either ectopic schwann cells of peri-vascular schwann cells in the sellar region.
Guenot
M
M
Service de Neurochirurgie du Pr F. Lapierre, CHU de Poitiers.
Bataille
B
B
Wager
M
M
D000368:Aged; D003952:Diagnostic Imaging; D006801:Humans; D007018:Hypopituitarism / Q000209:etiology; D008297:Male; D009442:Neurilemmoma / Q000150:complications / Q000175:diagnosis* / Q000601:surgery; D012658:Sella Turcica; D012888:Skull Neoplasms / Q000150:complications / Q000175:diagnosis* / Q000601:surgery; D014786:Vision Disorders / Q000209:etiology
Neurinomes intra-sellaires. A propos d'un cas et revue de la littérature.