Radiology of acalculous gall-bladder disease - a new sign.

Radiography of excised gall-bladders, immersed in water, has shown that chronically infected gall-bladders frequently contain fat. This fat can be seen in vivo, and the frequency of the finding was assessed by reviewing 43 patients with acalculous gall-bladder disease. Other radiological signs in the cholecystograms were looked for retrospectively, and their incidence assessed. In 20 cases out of 40, no radiological abnormality was found.