Abstract
We retrospectively analyzed oncologic and reproductive outcomes of fertility-seeking premenopausal women with complex atypical hyperplasia (CAH) or Grade 1 endometrial adenocarcinoma (G1EA) who underwent medical management with high-dose medroxyprogesterone acetate (MPA) therapy. Patients were given a dose of 400-600 mg of MPA orally on a daily basis. They had histologically confirmed CAH or G1EA at presumed stage IA and wished to preserve fertility. Endometrial tissue sampling was carried out by dilation and curettage before and after the treatment and the pathologic response to MPA treatment was assessed. A total of 27 premenopausal patients received MPA therapy. The median follow-up time was 39.2 months (3.4-153.8 months). Complete response was achieved in 81.8 % (9/11) of CAH cases and 68.8 % (11/16) of G1EA. Although no recurrences were found in CAH patients, nine G1EA patients (81.8 %) eventually recurred and underwent total hysterectomy. Neither therapeutic death nor irreversible toxicities were observed during the follow-up periods. Five patients (4 CAH and 1 G1EA) became pregnant and had nine live births. The high efficacy of fertility-sparing treatment with MPA was shown demonstrated. MPA therapy can be considered acceptable for the purpose of enabling patients to preserve their fertility. However, the rate of recurrence was high in patients with G1EA. Even in responders, close follow-up is required and a total hysterectomy needs to be considered without delay. Patients should be aware of the risks and limitations of this conservative treatment.
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