Fig. 6From: 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 torsionTwo CT cases of haemorrhagic ovarian cysts. a, b The normal-sized left ovary (arrowheads) show mixed appearance with dependent high attenuation and fluid-fluid level (thin arrow in a) consistent with haemorrhagic corpus luteum. c, d Unenhanced (c) and post-contrast (d) images show a larger, bilocular adnexal lesion (arrowheads) with thin regular peripheral enhancement and dependent hyperattenuation (thin arrows). Note the ovarian vessels (arrow in d)Back to article page