Fig. 7From: Cross-sectional imaging of acute gynaecologic disorders: CT and MRI findings with differential diagnosis—part I: corpus luteum and haemorrhagic ovarian cysts, genital causes of haemoperitoneum and adnexal torsionHaemorrhagic corpus luteum and functional cyst in a 15-year-old woman with pelvic pain. Multiplanar T2-weighted (a–c) and precontrast fat-suppressed T1-weighted (d–f) images showed a right adnexal cyst (arrowheads) with internal fluid-fluid level and a bloody dependent component, T2-hypointense and T1-hyperintense. Contralaterally, a well-marginated unilocular cystic lesion of the left ovary (arrows) shows thin walls and homogeneous fluid-like signal intensity. Note the compressed ovarian parenchyma along the lateral edge of the cyst (thin arrow in b) and pelvic peritoneal effusion (asterisk)Back to article page