It is well known the CT is very useful in the evaluation of gallbladder carcinoma. We have studied 19 cases ofgallbladder carcinoma with whole body scanner from May 1980 to Aug. 1983. 1. The sex distribution were 11 malesand 8 females with over 40 years of age. 2. The computed tomographic classificications of the cases were 7 ofintraluminal fungating mass(single 5 and multiple 2), 5 of mass filling the gallbladder, 5 of irregular thickenedGB and 2 of mixed type, irregular thickned wall and intraluminal fungating mass. 3. CT demonstrated metastasis ofother organ, 8 cases of the liver, 5 cases of the extrahepatic bile duct, 3 cases of peritoneum, 2 cases ofduodenum, 1 case of the stomach, 1 case of the pancreas, and 15 cases of lymph nodes. 4. Associated diseases were6 cases of gall stone, 2 cases of clonorchiasis, 1 case of pancreatic pseudocyst, and 1 case of renal cyst.