It is well known that the computed tomography (CT) is very useful in the evaluation of gallbladder carcinoma. Wehave studied 19 cases of gallbladder carcinoma with whole body scanner from May 1980 to Aug. 1983. 1. The sex distribution were 11 males and 8 females with over 40 years of age. 2. The computed tomographic classifications of the cases were 7 of intraluminal fungating mass (single 5 and multiple 2), 5 of mass filling the gallbladder, 5 of irregular thickened GB wall and 2 of mixed type, irregular thickened wall and intraluminal fungating mass. 3. CT demonstrated metastasis of other organ, 8 cases of the liver, 5 cases of the extrahepatic bile duct, 3 cases of peritoneum, 1 case of the stomach, 1 case of the pancreas, and 15 cases of lymph nodes. 4. ssociated diseases were 6 cases of gall stone, 2 cases of clonorchiasis, 1 case of pancreatic pseudocyst, and 1 case of renal cyst.