Periprostatic Perineurioma, Description of a Case With Unusual Localization.

Perineurioma is a rare entity, it is a benign peripheral nerve sheath tumor entirely composed of perineurial cells. A 62-year-old male patient was admitted to our hospital, suffering from scrotal and pelvic pain combined with a severe and continuous pain in his right thigh. A transrectal ultrasound revealed a periprostatic oval lesion of about 5 cm in maximum diameter. A sovrapubic laparotomy was performed with a complete tumor excision. The morphological and immunohistochemical data were most consistent with the diagnosis of perineurioma.