MediAI

Caroli Disease Imaging: MRI Findings, Central Dot Sign, and the Future of AI-Assisted Hepatobiliary Diagnosis Introduction Rare hepatobiliary disorders often present significant diagnostic challenges for radiologists, hepatologists, and gastroenterologists. Among these uncommon entities, Caroli disease occupies a unique position because its imaging appearance can be highly characteristic when recognized correctly, yet easily overlooked when encountered infrequently. Caroli disease is a congenital fibropolycystic liver disorder characterized by segmental or diffuse non-obstructive dilatation of the intrahepatic bile ducts. Although considered rare, accurate recognition is critical because delayed diagnosis may lead to recurrent cholangitis, hepatolithiasis, hepatic fibrosis, portal hypertension, and ultimately liver failure. Modern imaging techniques, particularly MRI and MRCP, have transformed the diagnostic approach. Even more exciting is the emergence of artificial intelligence (AI) ...

  Understanding Benign Hepatic Hemangioma: A Common Yet Overlooked Liver Lesion Author: Dr. SB Lee, MD, PhD (Medicine & Biomedical Engineering) Estimated reading time: 6 minutes Introduction Benign hepatic hemangioma, the most common benign liver tumor, often appears incidentally during imaging studies performed for unrelated reasons. Despite its frequent occurrence—up to 20% in the general population—many clinicians and patients are unfamiliar with its typical imaging features and clinical implications. In this column, I present a real case of a 42-year-old woman diagnosed with hepatic hemangioma, discuss its epidemiology, imaging characteristics, and differential diagnosis, and clarify when treatment is necessary. Case Overview: A 42-Year-Old Woman with Hyperlipidemia A 42-year-old woman with a history of hyperlipidemia visited the clinic for routine evaluation. An abdominal CT was performed, revealing a 3.2 x 2.9 cm hemangioma in the right hepatic lobe. Further abdomi...