title: Polypoid adenomyoma of endocervical type.
abstract: 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.
authors.affiliation: Fujita Health University School of Medicine, Toyoake, Aichi 470-1192, Japan ; Department of Pathology, Fujita Health University School of Medicine, Toyoake, Aichi 470-1192, Japan.
authors.forename: Yuka
authors.initials: Y
authors.lastname: Takeda
authors.affiliation: Fujita Health University School of Medicine, Toyoake, Aichi 470-1192, Japan ; Department of Pathology, Fujita Health University School of Medicine, Toyoake, Aichi 470-1192, Japan.
authors.forename: Daiju
authors.initials: D
authors.lastname: Araki
authors.affiliation: Department of Obstetrics and Gynecology, Keiyu General Hospital, Yokohama, Kanagawa 220-0012, Japan.
authors.forename: Toru
authors.identifier: 0000-0002-4738-9514
authors.initials: T
authors.lastname: Arase
authors.affiliation: Department of Pathology, Fujita Health University School of Medicine, Toyoake, Aichi 470-1192, Japan.
authors.forename: Yutaka
authors.initials: Y
authors.lastname: Tsutsumi
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