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  • Title: Radiological patterns of secondary sclerosing cholangitis in patients after lung transplantation.
    Author: Kim HJ, Park MS, Son JW, Han K, Lee JH, Kim JK, Paik HC.
    Journal: Abdom Radiol (NY); 2019 Apr; 44(4):1361-1366. PubMed ID: 30377725.
    Abstract:
    PURPOSE: The purpose of this study was to investigate the radiological patterns of secondary sclerosing cholangitis (SSC) following lung transplantation. METHODS: Fifty-five patients underwent abdominopelvic CT before and after lung transplantation for end stage pulmonary disease. Nine patients underwent MR cholangiopancreatography (MRCP). The radiological patterns of biliary abnormalities (location, bile duct dilatation with stricture, beaded appearance, and biliary casts/sludge), laboratory data (serum total bilirubin and alkaline phosphatase), and patient survival rates were evaluated. SSC was diagnosed when there were newly developed biliary abnormalities with cholestasis after lung transplantation. Potential perioperative risk factors pertaining to SSC were analyzed. Patient survival rates with or without SSC were compared. RESULTS: Six of the 55 patients showed imaging and laboratory findings of SSC after lung transplantation. Multifocal dilatation and stricture involved the intrahepatic (6 of 6, 100%), hilar (4 of 6, 66.7%), and extrahepatic bile duct (1 of 6, 16.7%). On CT, the lesions presented as multifocal small cyst-like lesions along the bile duct course. On MRCP, the lesions showed beaded appearance with mild duct dilatation. Preoperative mechanical ventilation and bilateral lung transplantation were associated with SSC (p < 0.05). The median survival of patients with SSC was 4.6 months. CONCLUSION: Lung transplantation can induce SSC similar to SSC in critically ill patients, and result in worse clinical outcomes than in patients without SSC. Multifocal small cyst-like lesions along the intrahepatic bile duct on CT and beaded appearance on MRCP are suggestive findings of SSC in patients with cholestasis after lung transplantation.
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