Prospective study of fertility-sparing treatment with chlormadinone acetate for endometrial carcinoma and atypical hyperplasia in young women.

Objective: To confirm that the efficiency of the use of chlormadinone acetate for 6 months to obtain remission of atypical hyperplasia or endometrial carcinoma is comparable to that of the use of other fertility-sparing treatments.

Methods: The present study is based on the PREFERE prospective registry. All the patients received 3 or 6 months of chlormadinone acetate and were evaluated by hysteroscopic resection and pipelle sampling every 3 months.

Results: Ninety-four patients were included. Seventy-nine patients achieved complete remission at 6 months (84%). No patients stopped treatment because of a lack of tolerance. Twenty-four per cent of the patients achieved a live birth.

Conclusions: Chlormadinone acetate is an effective and well-tolerated fertility-sparing treatment. Its benefits over other progestins are its tolerability, and its absence of contraindications, which make it a good choice for patients with thromboembolism and high vascular risk.