An unusual polynodular liver disease: Multiple biliary hamartoma

SummaryWe report a 73-year-old male patient who suffered from right upper abdominal dull pain, fever, and chills for 2 days. Gall bladder stones and acute cholecystitis were diagnosed, and parenteral antibiotics were used. The abdominal ultrasonography showed multiple tiny hyperechoic nodules over both lobes of the liver. His computed tomography scan revealed low-density lesions without contrast enhancement. Magnetic resonance imaging and magnetic resonance cholangiopancreatography further revealed lesions that were hypointense on T1-weighted images and hyperintense on T2-weighted images. Laparoscopic cholecystectomy and liver biopsy were performed, and biliary hamartoma was diagnosed based on the pathology. This report describes an unusual case of multiple biliary hamartomas and reviews the literature regarding the incidence, pathogenesis, and diagnosis of this disease.