School ager who fell and was stepped on by a horse

CT of autosomal dominant polycystic kidney disease
Axial CT with contrast of the abdomen (above left) shows a large laceration in the middle of the right lobe of the liver that is associated with a large amount of hemoperitoneum inferior to the liver (below left). Coronal CT (right) shows multiple large cysts scattered throughout the cortex and medulla in both kidneys.

The diagnosis was autosomal dominant polycystic kidney disease in a patient with a liver laceration.