Two cases of larger cornual residual villi, treated by the hysteroscopic cold knife

The present report describes two cases of larger cornual residual villi after dilatation and curettage because of missed abortion, treated by the hysteroscopic cold knife. One case is 39 years old and the other is 30 years old, both cases were treated with dilatation and curettage because of missed abortion, surprisingly, one of the patients suffered two curettage surgeries. After the curettage, with irregular vaginal bleeding more than 3 months, pelvic ultrasonography revealed an enlarged uterine cavity with a lager cornual residual villi was suspected. We treated them with Hysteroscopy Endo-Operative System, the operation was successful without any complications. The blood β-HCG drops rapidly to normal after surgery. We performed office hysteroscopy for them 1 month after the operation, and the corners of uterine were normal. The hysteroscopic cold knife may represent a valid tool for the treatment of large cornual residual villi.