Figure 3b. (a) Anteroposterior retrograde pyelogram demonstrates autosomal dominant polycystic renal disease. The kidneys are enlarged with distorted calices (arrows) that are compressed by multiple intrarenal cysts. An IVU image could not be obtained because the patient had renal failure. (b) Contemporary US image obtained from the extended longitudinal view of the right kidney shows autosomal dominant polycystic renal disease. The cursors denote the length and width of the kidney: 210.4 x 68.6 mm. C = cyst. (c) Transverse computed tomographic (CT) and (d) coronal T1-weighted magnetic resonance (MR) (16/800 [repetition time msec/echo time msec]) images show the cysts (C).