[Comparative study of ultrasonography and oral cholecystography in gallbladder lithiasis detection (author's transl)].

A comparative study has been realized to test the accuracy of oral cholecystography versus real time ultrasonography in 150 patients with gallbladder lithiasis surgery. Oral cholecystography correctly diagnosed 107 cases (70%), whereas ultrasonography diagnosed gallbladder lithiasis in 145 or in 96,5% of the cases. Failure of the technique in the remaining cases was related to a scleroatrophic gall bladder with stones of less than 3 mm. These results confirm that ultrasonography must be proposed as the first examination for the diagnosis of gallstones.