title: Adenomatoid tumor of the epididymis: immunohistochemical study of 8 cases.
abstract: The immunohistochemical characteristics of 8 adenomatoid tumors of the epididymis are reported. Using the peroxidase antiperoxidase technique and the avidin-biotin complex method, antibodies against carcinoembryonic antigen, factor-VIII-related antigen and keratin were tested. In agreement with previous findings strong cytoplasmic staining for keratin was seen in all the tumors, whereas the factor-VIII-related antigen and carcinoembryonic antigen were absent. These results suggest a mesothelial origin of the adenomatoid tumor.
mesh_terms: D002272:Carcinoembryonic Antigen / Q000032:analysis; D004822:Epididymis; D000939:Epitopes; D006651:Histocytochemistry; D006801:Humans; D007124:Immunoenzyme Techniques; D007633:Keratins / Q000032:analysis / Q000276:immunology; D008297:Male; D013724:Teratoma / Q000473:pathology*; D013736:Testicular Neoplasms / Q000473:pathology*
chemical_list: D002272:Carcinoembryonic Antigen; D000939:Epitopes; D007633:Keratins