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Case Reports in Pathology
Volume 2014, Article ID 275421, 4 pages
Case Report

Polypoid Adenomyoma of Endocervical Type

1Fujita Health University School of Medicine, Toyoake, Aichi 470-1192, Japan
2Department of Pathology, Fujita Health University School of Medicine, Toyoake, Aichi 470-1192, Japan
3Department of Obstetrics and Gynecology, Keiyu General Hospital, Yokohama, Kanagawa 220-0012, Japan

Received 2 May 2014; Accepted 16 June 2014; Published 1 July 2014

Academic Editor: Hiroko Kuwabara

Copyright © 2014 Yuka Takeda et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


We report herein a 53-year-old Japanese female case of polypoid adenomyoma of endocervical type. A sessile 16 mm sized cervical polyp, hard in consistency, was surgically removed. Histologically, the polypoid lesion was composed of smooth muscle bundles and scattered benign-looking endocervical glands. The mucin was diffusely alcianophilic. Immunohistochemically, some mucous glands were positive for MUC1 (CA15-3) and MUC5AC, and the other small glands were immunoreactive for MUC6. MUC2 and mucin characteristic of gastric gland mucous cells (M-GGMC-1 or HIK1083) were negative. Carcinoembryonic antigen was consistently expressed along the apical surface. Estrogen receptor was positive, while progesterone receptor was negative. Ki-67 labeling index was low. These findings were consistent with the endocervical nature of the mucin-producing columnar cells. This is the 18th case of adenomyoma of endocervical type reported in the English literature.