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Presacral Ancient Schwannoma in a Middle-Aged Man- A Rare Entity
Journal of Evolution of Medical and Dental Sciences
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.  Ancient schwannoma is an uncommon variant of schwannomas characterized by extensive degenerative changes and hypocellular areas. Presacral ancient schwannomas are raredoi:10.14260/jemds/2020/153 fatcat:vbgslrwzvzdlzbrsvf2thm7ogu