Outcomes of extended progestin therapy in atypical endometrial hyperplasia patients without an initial response to progestin: a retrospective study from two tertiary centers in Korea and Taiwan.

Extension of progestin treatment course is feasible for AEH patients without an initial response to progestin. Higher daily progestin dosage was associated with higher probability of CR, and obesity was associated with higher risk of relapse. The patients without an initial response to progestins and whose AEH progressed to endometrial carcinoma had good prognoses.