Fig. 4

Cumulative RFS curves in fertility-sparing EEC/AEH patients after the successful or failed pregnancy. A The cumulative RFS in patients of pregnancy group and non-pregnancy group. With successful pregnancy, patients had longer RFS than failed pregnancy group patients. B The cumulative RFS in patients with ART treatment and natural conception. There was no difference in RFS between the two groups. AEH: atypical endometrial hyperplasia; ART: assisted reproductive technology; EEC: early stage endometrial cancer; RFS: recurrence-free survival