Question: A 65-year-old woman presented with epigastric pain and fever for 3 days. A plain abdominal radiograph revealed massive calcification spots over the epigastric area (Figure A). She had a history of intermittent epigastric pain, which was relieved by medications prescribed by local clinics. A chest radiograph conducted 19 years ago at our hospital had revealed no calcification spot in the epigastric area (Figure B). An abdominal computed tomography (CT) scan revealed a low-density zone with calcified content on the left hepatic lobe, with marked atrophy and mild enhancement in some areas of the low pole after postcontrast study (Figure C, D). Laboratory findings indicated an increase in serum gamma glutamyl transferase (82 U/L; reference range, 9–64 U/L) and C-reactive protein (10.8 mg/dL; reference range, <1 mg/dL) levels. Total bilirubin, alkaline phosphatase, alanine aminotransferase, and aspartate aminotransferase levels were all within normal ranges. What was the diagnosis? See the Gastroenterology web site (www.gastrojournal.org) for more information on submitting your favorite image to Clinical Challenges and Images in GI. The patient underwent a left lobectomy after her fever subsided. Pathology revealed left intrahepatic calcification stones and atrophy (Figure E). The patient was discharged on postoperative day 7 without any complications. Primary hepatolithiasis is defined as the presence of stones in the intrahepatic ducts (IHD) of the liver. This condition is endemic in the Asian population, and its prevalence is increasing in Western countries. Although hepatolithiasis is benign, the frequent development of biliary obstruction and cholangitis can lead to sepsis. Early diagnosis and aggressive treatment are key to a good prognosis. Ultrasound examination remains the method of choice for detecting gallbladder stones, but relatively low sensitivity in detecting IHD stones. CT scans can detect IHD stones, but their positivity rate (63%–81%) is unsatisfactory. Magnetic resonance cholangiopancreatography is the gold standard for evaluating IHD stones. Only approximately 15% to 20% of IHD stones contain sufficient calcium to be visible on plain radiographs.1Mikolajčík P. Ferko A. Demeter M. et al.The difficult path to correct diagnosis of hepatolithiasis: a case report.Acta Medica. 2021; 64: 125-128Google Scholar,2Kim T.K. Kim B.S. Kim J.H. et al.Diagnosis of intrahepatic stones: superiority of MR cholangiopancreatography over endoscopic retrograde cholangiopancreatography.AJR. 2002; 179: 429-434Crossref PubMed Scopus (65) Google Scholar In our case, IHD stones could be easily detected through plain radiography and confirmed through a CT scan. Endoscopic retrograde cholangiopancreatography is applied to remove IHD stones is difficult and may lead to recurrence. The definitive treatment for IHD stones is surgery, which can relieve abdominal pain and prevent recurrence and disease progression.3Hong K.S. Noh K.T. Min S.K. et al.Selection of surgical treatment types for intrahepatic duct stones.Korean J Hepatobiliary Pancreat Surg. 2011; 15: 139-145Crossref PubMed Google Scholar
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