Pneumoperitoneum caused by perforation of pyometra associated with a lost intrauterine device and perforated malignancy of the sigmoid colon

摘要

Intrauterine devices (IUDs) have been plagued by many early and late complications, including uterine perforation and subsequent migration into adjacent structures. Perforation of the uterus by an IUD is a serious complication occurring in approximately 1 of 350 to 1 of 2,500 insertions. It is more common among older women with “lost” IUDs. This case illustrates that unusual phenomenon that a lost IUD can penetrate into the omentum. We herein report a case of acute peritonitis and pneumoperitoneum with perforation of the uterus associated with a lost IUD and perforation of a malignancy of the sigmoid colon.