Clinical Applications of Levonorgestrel-releasing Intrauterine System in Non-contraceptive Field

LNG-IUS is a kind of T shaped stent that carries areservoir containing levonorgestrel,which mainly exhibits progestational activity in the uterine cavity.Besides providing long-term effective and reversible contraceptive effects,LNG-IUS also has definite effects in menorrhagia and endometrial protection during HRT.In addition,studies have shown that LNG-IUS also has favourable therapeutic effects in endometriosis,adenomyosis,uterine fibroids and endometrial hyperplasia,ect.The most common side effects of LNG-IUS are irregular vaginal bleeding and the occurrence of benign ovarian cysts.