title: A case of intratesticular endometrioid papillary cystadenocarcinoma.
abstract: We report a case of intratesticular endometrioid papillary cystadenocarcinoma. A 73-year-old man was admitted for a painless right scrotal swelling. Ultrasonography and computed tomography revealed a large cystic mass in the right testis. Right scrotum puncture revealed xanthochromic fluid with negative cytology. Three months later, follow-up computed tomography showed enlargement of the cystic mass. Right high orchiectomy was performed because a testicular malignancy was suspected. The pathological diagnosis was endometrioid papillary cystadenocarcinoma, and the cells were strongly positive for the estrogen and progesterone receptors. Testicular neoplasms resembling common ovarian-type epithelial tumors are very rare. This is the first report of endometrioid papillary cystadenocarcinoma of the testis.
authors.affiliation: Department of Urology, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita 010-8543, Japan.
authors.forename: Kazuyuki
authors.initials: K
authors.lastname: Numakura
authors.forename: Norihiko
authors.initials: N
authors.lastname: Tsuchiya
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Tsuruta
authors.forename: Takashi
authors.initials: T
authors.lastname: Obara
authors.forename: Mitsuru
authors.initials: M
authors.lastname: Saito
authors.forename: Takamitsu
authors.initials: T
authors.lastname: Inoue
authors.forename: Shintaro
authors.initials: S
authors.lastname: Narita
authors.forename: Yohei
authors.initials: Y
authors.lastname: Horikawa
authors.forename: Shigeru
authors.initials: S
authors.lastname: Satoh
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Nanjyo
authors.forename: Tomonori
authors.initials: T
authors.lastname: Habuchi
mesh_terms: D000368:Aged; D014408:Biomarkers, Tumor / Q000032:analysis*; D018269:Carcinoma, Endometrioid / Q000737:chemistry / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D018283:Cystadenocarcinoma, Papillary / Q000737:chemistry / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D006801:Humans; D007150:Immunohistochemistry; D008297:Male; D009919:Orchiectomy; D011960:Receptors, Estrogen / Q000032:analysis; D011980:Receptors, Progesterone / Q000032:analysis; D013736:Testicular Neoplasms / Q000737:chemistry / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery
chemical_list: D014408:Biomarkers, Tumor; D011960:Receptors, Estrogen; D011980:Receptors, Progesterone