Subserosal mass-like adenomyosis: Is it polypoid endometriosis

Abstract

Endometrial tissue is considered ectopic in the uterus if it is present on the uterine serosa (endometriosis) or if it is located excessively deep in the myometrium (adenomyosis). Occasionally, adenomyosis can be seen grossly as an enlarged and globular uterus because of the myometrial hypertrophy accompanies it. A 58-year-old woman underwent vaginal hysterectomy and bilateral salpingo-oophorectomy for endometrial polyp and suspected subserosal leiomyoma. Thus, she was found to have an endometrial polyp and diffuse adenomyosis. Histopathological examination of the subserosal nodule revealed adenomyosis instead of leiomyoma. Subserosal nodular formations of adenomyosis, mimicking leiomyoma is possible even without significant enlargement of the uterus.