[Monstrous scrotal leiomyoma: case report and literature survey].

The scrotal leiomyoma is a rare benign tumour, deriving from the smooth muscle. This tumour entity constitutes a differential diagnosis to malignant testicular tumours. Up to now, only 8 cases have been reported in the literature. We report on a 63-year-old European patient, presenting in our clinic for further treatment with a now monstrous mass of the left testis (about 8 kg) that has been growing for about 30 years, After partial scrotalectomy and orchiectomy pathological analysis confirmed a left-sided leiomyoma of the testicular/paratestical tissue. This case shows that even rare tumours should be included in the differential diagnosis of a testicular tumour.