Caroli's disease: a magnetic resonance cholangiopancreatography diagnosis.

Magnetic resonance cholangiopancreatography (MRCP) has received much attention in the recent literature as a noninvasive alternative to endoscopic retrograde cholangiography, primarily for biliary calculus disease, but also for the less common indication of evaluation of biliary anomalies. We present a case of Caroli's disease in which the diagnosis can be clearly inferred by MRCP. The findings of MRCP and endoscopic retrograde cholangiopancreatography are similar. This new procedure could be a noninvasive alternative to direct cholangiography and perhaps will become the first-choice imaging technique for diagnosing Caroli's disease.