title: Polyorchidism and seminoma in a child.
abstract: A case is reported of a neoplasm involving a supernumerary testicle in a 9-year-old boy. The histologic diagnosis was anaplastic seminoma. We have not been able to find a similar case in the literature.
mesh_terms: D002369:Castration; D002648:Child; D004407:Dysgerminoma / Q000150:complications* / Q000473:pathology; D006801:Humans; D008297:Male; D009362:Neoplasm Metastasis; D013736:Testicular Neoplasms / Q000150:complications* / Q000473:pathology; D013737:Testis / Q000002:abnormalities*