Hepatic Cyst Infection in a Hemodialysis Patient with Autosomal Dominant Polycystic Kidney Disease Complicated by Non-symptomatic Caroli Disease

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An 84-year-old woman undergoing hemodialysis for autosomal dominant polycystic kidney disease (ADPKD) was admitted for refractory hepatic cyst infection. Magnetic resonance cholangiopancreatography and contrast-enhanced computed tomography revealed a concurrent complication of Caroli disease, diagnosed by cystic dilatation of the intrahepatic bile duct and a central dot sign in the vicinity of the infected liver cyst. However, there was no traffic between the infected liver cyst and dilated bile duct, and the cyst drainage procedure was curative. In cases where both diseases were combined, it was suggested that two infections, cyst and biliary tract infections, could occur.