Figure 12a. Acute Fitz-Hugh–Curtis syndrome in a 31-year-old woman with right upper quadrant pain. (a) Arterial phase contrast-enhanced CT scan shows enhancement of the capsule of the left hepatic lobe (arrowhead). (b) Equilibrium phase contrast-enhanced CT scan shows disappearance of the hepatic capsular enhancement. The findings in a and b are suggestive of acute Fitz-Hugh–Curtis syndrome. (c) Axial contrast-enhanced CT scan of the pelvis shows a tubo-ovarian abscess (*) in the left adnexal region.