Nonfunctioning adrenocortical carcinoma

Unenhanced (A) and enhanced (B) axial CT images from a 22-year-old female who presented with left lower quadrant abdominal pain. An 8 cm right adrenal mass was discovered (arrows). On the unenhanced image, the CT attenuation was 34 HU and diagnostic of a lipid-poor adrenal mass. With contrast administration, the adrenal mass was shown to be vascular (B), enhanced inhomogenously, and had slow contrast washout (<50% at 10 minutes). All adrenal function tests were normal. At surgery, this tumor proved to be a 269 gram adrenal cortical carcinoma measuring 12 × 8 × 5.5 cm.