Objective To report a case of successful pregnancy after conservative surgery for stage 1A endometrial cancer. Design Case report. Setting University hospital. Patient(s) A 33-year-old woman who was diagnosed with stage IA endometrial cancer. Intervention(s) Conservative surgery and chemotherapy. Main Outcome Measure(s) Clinical outcome. Result(s) After administering medroxyprogesterone acetate (MPA) for 6 weeks, hysterofiberscopy showed that the restricted lesions still remained. A partial resection of the lesions was therefore performed. The patient delivered a girl by cesarean section after the surgery. Conclusion(s) Conservative surgery after MPA treatment may be a new treatment option for patients who wish to preserve their fertility.