title: Carcinoid tumor of undescended testis.
abstract: Carcinoid tumor of the testis is rare and its histogenesis is controversial. We report a case of carcinoid tumor in an undescended testis with electron microscopic evidence of neurosecretory granules.
mesh_terms: D000328:Adult; D002276:Carcinoid Tumor / Q000150:complications* / Q000473:pathology; D003456:Cryptorchidism / Q000150:complications*; D003594:Cytoplasmic Granules / Q000648:ultrastructure; D006801:Humans; D008297:Male; D013736:Testicular Neoplasms / Q000150:complications* / Q000473:pathology; D013737:Testis / Q000473:pathology*