Uterine Adenomyoma with Uterus-like Features

Two uterine adenomyomas with unusual features are presented. Case 1 was a 43-year-old woman who had a 1-year history of menorrhagia and dysmenorrhea. The uterus showed a 3-cm-sized mass attached to the posterior wall of the lower uterine segment. On section, there was a well-circumscribed, submucosal cystic mass with a thick muscular wall. Histologically, the cavities were lined by well-developed secretory-phase endometrium and surrounded by smooth muscle, like a small uterus. Case 2 was a 52-year-old woman who visited the hospital because of itching sensation on the vulva. On physical examination, the mass was found on the left side of the pelvis. The enlarged uterus had an 8-cm-sized protruding mass from the left side of the lower uterine segment. On section, the mass was cystic and solid. Histologically, the cysts were lined by thin basalis-type endometrial glands and stroma, and the solid portion was composed of smooth muscle and fat cells.