title: Histologically verified primary peritoneal pregnancy with implantation in the sigmoid mesenterium.
abstract: A true case of primary peritoneal pregnancy is reported. The patient was complaining of an IUD disorder but became acutely ill in 2 hours--fortunately in the hospital--because of the dramatic bleeding from the highly vascularized implantation site of the ectopic pregnancy.
mesh_terms: D000328:Adult; D012809:Colon, Sigmoid; D005260:Female; D006471:Gastrointestinal Hemorrhage / Q000209:etiology; D006801:Humans; D011247:Pregnancy; D011271:Pregnancy, Ectopic / Q000150:complications / Q000175:diagnosis*