title: Bizarre leiomyoma of the scrotum.
abstract: Scrotal leiomyomas with atypical bizarre nuclei are rare, which might be misdiagnosed as malignant tumor. We describe a case of scrotal bizarre leiomyoma in a 65-yr-old man. The tumor was a 1 cm-sized, well circumscribed, oval mass arising from the tunica dartos muscle. Histologically, it was formed by whorling bundles of fusiform cells with occasional atypical, pleomorphic nuclei and pseudo-inclusions. Mitosis was not found. Although morphologically atypical, scrotal bizarre leiomyomas take on a biologic behavior not different from that of conventional leiomyoma, they should be distinguished from leiomyosarcoma to avoid unnecessary treatment.
authors.affiliation: Department of Pathology, Kangnam General Hospital Public Corporation, Seoul, Korea.
authors.forename: Na Rae
authors.initials: NR
authors.lastname: Kim
authors.forename: Chang Ohk
authors.initials: CO
authors.lastname: Sung
authors.forename: Joungho
authors.initials: J
authors.lastname: Han
mesh_terms: D000368:Aged; D005834:Genital Neoplasms, Male / Q000473:pathology* / Q000601:surgery; D006801:Humans; D007889:Leiomyoma / Q000473:pathology* / Q000601:surgery; D008297:Male; D012611:Scrotum / Q000473:pathology*