An Immunohistochemical Study of Adenomatoid Tumors of the Uterus and Fallopian Tube

Department of Pathology, Shizuoka City Shimizu Hospital, Shizuoka, Japan.
Applied immunohistochemistry & molecular morphology: AIMM / official publication of the Society for Applied Immunohistochemistry (Impact Factor: 2.06). 03/2012; 20(2):173-6. DOI: 10.1097/PAI.0b013e318229ea89
Source: PubMed

ABSTRACT Immunohistochemical studies of adenomatoid tumor (AT) are rare in the English literature. The author reports herein immunoprofile of AT of the female genital organs. The materials are 4 cases of AT of the uterus and 1 case of AT of the fallopian tube. The ages of the patients were 37, 41, 43, 45, and 56 years. The sizes of ATs were 0.8 cm, 1 cm, 1.5 cm, 2 cm, and 4 cm. The 4 ATs of the uterus were composed of tubules and smooth muscles, whereas 1 AT of the fallopian tube was composed only of tubules. Immunohistochemically, the ATs were consistently positive for pancytokeratin AE1/3+++, pancytokeratin CAM5.2 ++, cytokeratin (CK) 7 +++, CK8 +, CK18++, CK19++, calretinin +++, and D2-40 ++. Estrogen receptor (ER) and progesterone receptor (PgR) was positive in 4 of 5 cases. CK34βE12 was positive in 1 of 5 case. The Ki-67 labeling ranged from 0.2% to 3%. The smooth muscles in uterine ATs were positive for α-smooth muscle actin, ER, and PgR. The ATs were consistently negative for CK5/6, CK14, CK20, EMA, HMB45, vimentin, desmin, CD31, CD34, factor VIII-relatedantigen, S100 protein, p53, CD68, CDK4, MDM2, and Ber-EP4. These data indicate that ATs consistently express pancytokeratin AE1/3, pancytokeratin CAM5.2, CK7, CK8, CK18, CK19, calretinin, and D2-40, that some ATs express CK34βE12, ER, and PgR, that ATs show little proliferative activity, and that ATs were consistently negative for CK5/6, CK14, CK20, EMA, HMB45, vimentin, desmin, CD31, CD34, factor VIII-related antigen, S100 protein, p53, CD68, CDK4, MDM2, and Ber-EP4.

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