title: Endometrioid like yolk sac tumor of the testis with small teratomatous foci: A case report and review of the literature.
abstract: I have reported a case of endometrioid like yolk sac tumor of the testis in a 20-year-old boy. Endometrioid like yolk sac tumor is a rare tumor. A few cases have been reported in ovary. In case of male, a case of pure glandular endometrioid like yolk sac tumor is reported in a 43 years male in right undescended testis and another case of abdominal metastasis showing endometrioid pattern from mixed testicular germ cell tumor comprising of teratoma and embryonal carcinoma. My patient was a 20-year-old male presented with painless enlargement of right testis. Grossly the tumor was glistening creamish white with a multicystic appearance. Histopathological examination showed the tumor to be composed of glandular elements resembling early secretory endometrium, foci of keratinized thin squamous epithelium and a single focus of benign cartilage. The glandular elements show immunohistochemical positivity for AFP, cytokeratin 7 (CK7) and epithelial membrane antigen (EMA).
authors.affiliation: Department of Pathology, Silchar Medical College and Hospital, Silchar, Assam, India.
authors.forename: Prabir
authors.initials: P
authors.lastname: Hazarika
mesh_terms: D014408:Biomarkers, Tumor / Q000378:metabolism*; D018240:Endodermal Sinus Tumor / Q000175:diagnosis* / Q000378:metabolism / Q000601:surgery; D006801:Humans; D053552:Keratin-7 / Q000378:metabolism; D008297:Male; D018396:Mucin-1 / Q000378:metabolism; D009373:Neoplasms, Germ Cell and Embryonal / Q000175:diagnosis* / Q000378:metabolism / Q000601:surgery; D009919:Orchiectomy; D013724:Teratoma / Q000175:diagnosis* / Q000378:metabolism / Q000601:surgery; D013736:Testicular Neoplasms / Q000175:diagnosis* / Q000378:metabolism / Q000601:surgery; D013737:Testis / Q000378:metabolism / Q000473:pathology; D055815:Young Adult; D000509:alpha-Fetoproteins / Q000378:metabolism
chemical_list: C097353:AFP protein, human; D014408:Biomarkers, Tumor; D053552:Keratin-7; D018396:Mucin-1; D000509:alpha-Fetoproteins