Gallstone dissolution treatment with a combination of chenodeoxycholic and ursodeoxycholic acids

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Abstract
Sixteen patients with radiolucent gallstones were treated with a combination of chenodeoxycholic and ursodeoxycholic acids for an average of 19 months. Liver tests remained normal in all patients. In nine of 15 patients (60%), in whom the gallbladder visualized during an oral cholecystogram, gallstones dissolved after one year, in eight of them, partially, and in the remaining one, completely. After two years, partial dissolution became complete in three patients, and partial dissolution occurred in 1 additional patient. Changes in lithogenic index and bile acid pool size were statistically not significant. Biliary content of chenodeoxycholic acid increased significantly from 25.7±3.53 to 45.2±3.31 (mean±se)% and that of ursodeoxycholic acid from 2.6±0.52 to 34.6±2.45%. There were no discernible changes in serum triglycerides, total cholesterol, and HDL cholesterol. The findings suggest that the chenodeoxycholic-ursodeoxycholic acid combination provides a safe and efficacious treatment for some cholesterol gallstones.