Fig. 2

Rupture of a haemorrhagic cyst. Patient presented to the accident and emergency department with a 1-day history of acute right iliac fossa pain and diarrhoea. Initially the patient was diagnosed as having an appendicitis. a CT following iv contrast administration demonstrates bilateral low-density cystic lesions (white arrows). There is extensive hyperdense free pelvic fluid representing hemorrhagic ascites (black arrow). b Trans-abdominal ultrasound shows free fluid containing low level echoes in the pelvis (black arrow). There is an adnexal cyst in the pelvis representing the right haemorrhagic ovarian cyst (white arrow). The smaller right-sided cyst may be the site of rupture as the ruptured cyst may be small or difficult to visualize following rupture