Endometrial Polyp

The goal of this clinical trial is to determine whether the LNG-IUS is more effective to that of expectant in preventing endometrial polyp recurrence after hysteroscopic polypectomy. Researchers will compare LNG-IUS to expectant management to see if LNG-IUS works to reduce the recurrence rate of endometrial polyps. Participants will: Receive Mirena placement or not after hysteroscopic polypectomy； Be scheduled for a follow-up with TVCD to screen for endometrial polyps recurrence every 6 months.

The primary objective of this study is to compare the performance of two different surgical instruments, the 5 Fr bipolar electrode and the 5 Fr angled conical optical fiber for dual wavelength diode laser, in performing hysteroscopic polypectomy in an outpatient setting.