Perineal Schwannoma

Schwannoma 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.(1-3) Retroperitoneal pelvic localization of these tumours is quite rare.(4,5) Even more exceptional is development in the perineal area, which we report here.(4)