Presacral Ancient Schwannoma in a Middle-Aged Man- A Rare Entity,

ABSTRACT

Schwannomas are benign tumours arising from neoplastic transformation of Schwann cells around the nerve fibres. Tumours situated deeply like in retroperitoneum or pelvis are usually asymptomatic and may not be detected. Such long standing tumours may undergo extensive degenerative changes giving rise to ancient schwannomas.[1] Ancient schwannoma is an uncommon variant of schwannomas characterized by extensive degenerative changes and hypocellular areas. Presacral ancient schwannomas are rare and most of the reported cases are in females. We describe computed tomography (CT) findings in a case of presacral ancient schwannoma in a 49 year old male patient.