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Endometrial Abnormalities Occurring in Young Women on Long-Term Sequential Oral Contraception

From the Department of Obstetrics and Gynecology, University of Minnesota School of Medicine, Minneapolis, Minnesota

Abstract

Recently the occurrence of adenocarcinoma of the endometrium has been reported in young women exposed to sequential oral contraceptive agents for long periods of time. Twelve young women who had been using Oracon for periods of from 13 to 93 months were subjected to office endometrial aspirations. Tissue specimens showed endometrium which varied in diagnosis from proliferative endometrium to severe atypical adenomatous endometrial hyperplasia bordering on endometrial carcinoma in situ. Adenomatous endometrial hyperplasia is thought by many investigators to be a precancerous condition. The progression of endometrial changes from benign proliferation to cystic hyperplasia and adenomatous hyperplasia accompanied by varying degrees of anaplasia in young women exposed to Oracon for long periods of lime is significant. It is not surprising, therefore, that adenocarcinoma of the endometrium has been reported in these women at an age where this condition had been relatively uncommon prior to the use of sequential oral contraceptives.