Schwannomas are rare lesions of the orbit that can be confused with cavernous hemangioma on imaging studies. We report the case of an 84-year-old woman with a 9-year history of a tumoral lesion in the inferolateral left orbit. The imaging studies did not reveal specific characteristics, only bone remodeling due to the long evolution of the tumor. The patient underwent complete excision of the t...

E8 J can chir, Vol. 52, N 1, février 2009 © 2009 Association médicale canadienne S chwannoma is a benign tumour arising from Schwann cells of the peripheral nerve sheath; histologic predominance of degenerative findings is typical of a rare variant, the “ancient” schwannoma. Retroperitoneal pelvic localization of these tumours is quite rare. Even more exceptional is development in the perineal ...

Neurinomas, also referred to as neurilemmomas and schwannomas, are rare benign tumours of the peripheral nerves, a low proportion of which arise from the brachial plexus. Authors report a case of an ancient schwannoma arising from the brachial plexus. The tumour, usually asymptomatic, may cause sensory radicular symptoms, or rarely motor deficits in the involved arm. Enucleation of the tumour f...

Schwannoma is a benign tumor arising from the sheath of peripheral nerves. It occurs predominantly in head and neck (45%), extremities (33%) and retroperitoneal space (0.7%). Schwannomausually occurs in young to middle-aged adults, more prevalently in women, and is rare in old man, not to mention that arising from the mesentery. Herein, we report a case of ancient schwannoma arising from the me...

There is a broad spectrum of primary pelvic retroperitoneal masses in adults that demonstrate characteristic epidemiologic and histopathologic features and natural histories. These masses may be classified into five distinct subgroups using a pattern-based approach that takes anatomic distribution and certain imaging characteristics into account, allowing greater accuracy in their detection and...