Abstract
Biliary sludge is a subjective, ill-defined term. Surgery is often consulted for laparoscopic cholecystectomy, regarded as a low risk procedure.After IRB approval, a word search was used to identify "sludge" in all ultrasounds performed in 2016. The number of patients undergoing cholecystectomy, complications, pathologic findings, and risk factors were identified. Non-operative patients were evaluated for subsequent symptoms and studies or procedures related to biliary pathology.2769 patients underwent RUQ US; 253 patients were found to have sludge. Of 48 (19%) cholecystectomy patients, 9 had cholelithiasis. No deaths occurred in the cholecystectomy group. Two surgical complications occurred. Fifty (24.4%) of the 205 non-operative patients underwent subsequent US imaging: 44% residual sludge, 28% normal, 18% stones, and 10% other.Sludge may resolve 28% of the time. Repeat ultrasound is prudent before proceeding with cholecystectomy. If an abnormality is seen on repeat imaging and risk factors persist, cholecystectomy may be reasonable.
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