RESUMO
A case of ectopic endometrium in the omentum following perforation of the uterus by a Lippes Looptm is reported. Evidence is presented substantiating Sampson's theory of endometrial implantation.
PIP: This is a case report of a patient who had an IUD inserted the year following a spontaneous abortion. The next year she became pregnant and delivered a full-term infant. Another IUD was then inserted. After 2 years lower abdominal pain and vaginal bleeding of 2 months duration caused her to ask to have the IUD removed. The thread broke during the removal attempt so the patient was admitted to the hospital where a hysterogram revealed a Majzlin spring partially embedded in the uterine wall and a Lippes loop outside the uterine cavity. The Majzlin spring was removed through the vagina and curettage done. At laparotomy to remove the other IUD the Lippes loop was found embedded in a large mass of omentum. The loop and adherent omentum were removed. Histologic study revealed an area of well-preserved endometrium, an area of hemorrh agic endometrium with leukocytic infiltration, and dense fibrous tissue surrounding the endometriotic foci. These findings support the theory of endometrial transplantation rather than the theory of metaplasia.