Corpus luteum rupture mimicking acute appendicitis

Acute abdomen is a common presentation in women in the reproductive age. It may be caused by diverse conditions. The case below presented with classical signs and symptoms of appendicitis. Haemoperitoneum seen at laparotomy suggested a diagnosis of ectopic pregnancy .The diagnosis of ruptured corpus luteum cyst (RCLC) was made only after histology. The symptoms, signs and diagnosis of RCLC are discussed. The case highlights the need for circumspection in the diagnosis of the cause of acute abdomen. The current trend favours conservative management of RCLC thus the need for a high index of suspicion is emphasized to avoid unnecessary surgery.