Representative computed tomography (CT) images of a 71-year-old male patient that presented with recurrent oedema of the left lower extremity for 6 years: (a) contrast-enhanced CT of the abdomen and pelvis showed a massive diverticulum of the bladder that resulted in severe compression of the left iliac vein (white arrow) and (b) CT re-examination indicated that the bladder diverticulum was obviously retracted and there was no compression of the left iliac vein (white arrow).