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  • Title: Assessment of the common bile duct before cholecystectomy using ultrasound and biochemical measurements: validation based on follow-up.
    Author: Watkin DS, Haworth JM, Leaper DJ, Thompson MH.
    Journal: Ann R Coll Surg Engl; 1994 Sep; 76(5):317-9. PubMed ID: 7979072.
    Abstract:
    The selective use of operative cholangiography with cholecystectomy is controversial. We have combined measurement of the serum bilirubin, alkaline phosphatase and alanine aminotransferase with ultrasound measurement of the bile duct diameter to assess the common bile duct before cholecystectomy. Direct contrast cholangiography was not performed if the results of these measurements were normal on the day before operation. There were 253 patients assessed in this way before laparoscopic cholecystectomy. Patients with known bile duct stones were excluded, but those with a previous history of jaundice, pancreatitis or abnormal liver function tests were included. In 47 cases abnormalities were found and X-ray cholangiograms were performed; only six patients were found to have bile duct stones. Follow-up of all 253 patients, including repeating the preoperative measurements after 12 months in 93, found only two patients with evidence that common duct stones had been missed and these two stones passed spontaneously. No bile duct injuries have occurred. We conclude that preoperative assessment of the bile duct using ultrasound and liver function tests safely obviates the need for 'routine' operative cholangiography.
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