Adenomatoid tumors of the uterus.

The Adenomatoid Tumour is a rare benign neoplasm of the male and female genital tract. In the female it is seen with equal frequency in the uterus and the Fallopian tubes. In rare cases it is described in the ovarian and paraovarian connective tissue. In the uterus, AT is usually located in the cornual region, and its size usually varies between 0.5 and 2.0 cm in at its greatest dimension. The histogenesis of the AT is still a controversial subject, but the growing body of evidence now seems to favour a mesothelial origin. There is a frequent association between AT and leiomyomas in the uterus, with a variation between 56% and 80%. The treatment of the AT is simple excision of the tumour, if the uterus is not going to be removed for other reasons. Follow-up examinations of patients, who have undergone surgery for an AT have never, even over a period of up to 22 years, revealed recurrences and "malignant degeneration" is extremely rare.