title: Benign and malignant epithelial tumors of the rete testis in mice.
abstract: Two papillary cystadenomas and one papillary cystadenocarcinoma in the rete testis were found in two of 500 very old male JCL:ICR mice; the hosts had no other tumors. One mouse had bilateral cystic tumors. A 5 x 3 x 3 mm papillary cystadenoma was observed in the rete of the right testis. A 7 x 3 x 3 mm tumor with a mixed pattern of papillary cystadenocarcinoma and papillotubular adenocarcinoma was found in the rete of the left testis; the latter extended from the mediastinum to the ductuli efferents and the caput epididymis. The other mouse had a 9 x 5 x 5 mm papillary cystadenoma of borderline malignancy in the rete of the right testis. The mice had no clinical signs.
mesh_terms: D000818:Animals; D003536:Cystadenocarcinoma / Q000473:pathology*; D003537:Cystadenoma / Q000473:pathology*; D008297:Male; D051379:Mice; D012152:Rete Testis; D013736:Testicular Neoplasms / Q000473:pathology*; D013737:Testis