Leiomyoadenomatoid tumours of the epididymis: A new case report and review of the literature

Benign tumours of the epididymis are rare, and the most common tumour types include adenomatoid tumours, representing more than half of all cases, and leiomyomas. Here, we reported a case of leiomyoadenomatoid tumours of the epididymis, a very rare, benign histological entity with only few cases described in the English literature, which have been reviewed and summarised. Clinically, the lesion presented as a solitary mass growing at the level of the tail of the right epididymis. After the intraoperative frozen section analysis revealed a benign adenomatoid lesion, the mass was enucleated with a conservative surgery sparing the testis. This case highlights the importance for both pathologists and urologists to be aware of these rare, but benign, tumours, to avoid misdiagnosis, especially in the setting of frozen intraoperative consultation, or primary radical surgical procedures, as radical orchiepididymectomy without frozen section consultation.