Leiomyoma with bizarre nuclei of the scrotum: a rare entity

Leiomyomas of the paratesticular region are a rare entity. A subtype of leiomyomas called bizarre nuclei leiomyoma is even rarer and histologically present some interesting features that are important to recognise to make the differential diagnosis with its malignant counterpart-leiomyosarcoma. We present a case of a man in his 60s, who presented with a painless mass on the right testicle. The clinical diagnosis was of an epidermoid cyst. The mass was excised and a diagnosis of leiomyoma of bizarre nuclei was made.

Automated summary

Leiomyomas of the paratesticular region, especially the subtype called bizarre nuclei leiomyoma, are rare. It is important to recognize the histological features of bizarre nuclei leiomyoma in order to differentiate it from its malignant counterpart, leiomyosarcoma.