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Abstract
A regional group of outpatients with chronic inflammatory bowel disease (ulcerative colitis, n = 396, and Crohn's disease, n = 125) was biochemically screened to estimate the prevalence of hepatobiliary dysfunction. Among the 396 patients with ulcerative colitis, 69 (17%; 95% confidence limits, 14–22%) had at least 1 abnormal laboratory value. Serum bilirubin was elevated in 5%, alkaline phosphatases in 8%, aspartate aminotransferases in 4%, and alanine aminotransferases in 8% of the patients. Two per cent had decreased plasma coagulation factors (2.7 and 10) and serum albumin. Further diagnostic evaluation consisting of ultrasonography, liver biopsy, and endo-scopic retrograde cholangiography was performed in patients who had biochemical values more than twice the upper normal limit in two consecutive blood tests within a fortnight. Six patients (1%) fulfilled this criterion. Three patients had primary sclerosing cholangitis, of whom two were primarily diagnosed; one patient had cholangiocarcinoma also primarily diagnosed; and two patients were found to have alcoholic hepatic damage. Among the 125 patients with Crohn's disease, 38 (30%; 95% confidence limits, 23–38%) had at least 1 abnormal laboratory value. Serum bilirubin was elevated in 2%, alkaline phosphatases in 18%, aspartate aminotransferases in 3%, and alanine aminotransferases in 10% of the patients. One per cent had decreased plasma coagulation factors (2.7 and 10) and serum albumin concentrations. Three patients (2%) fulfilled the criteria for further evaluation as described above. One patient appeared to have epithelioid granuloma in the liver and one patient had alcoholic liver disease, whereas one patient refused further examination. We conclude that there is a rather high prevalence of abnormal hepatobiliary test results among unselected patients with ulcerative colitis and Crohn's disease and that the prevalence of serious liver diseases is less than 2%.