Bile duct hamartoma

A bile duct hamartoma or biliary hamartoma, is a benign tumour-like malformationof the liver.Micrograph of a bile duct hamartoma. Trichrome stain.Low magnification micrograph of a bile duct hamartoma. Trichrome stain.Gross pathologic appearance of a large bile duct hamartoma. A bile duct hamartoma or biliary hamartoma, is a benign tumour-like malformationof the liver. They are classically associated with polycystic liver disease, as may be seen in the context of polycystic kidney disease, and represent a malformation of the liver plate. At CT scans, bile duct hamartomas appear as small, well-defined hypo- or isoattenuating masses with little or no enhancement after contrast administration. At MRI, they appear hypointense on T1-weighted images, iso- or slightly hyperintense on T2-weighted images, and hypointense after administration of gadolinium based contrast-agent. On imaging, multiple hamartomas may look similar to metastases or microabscesses. The eponymous terms (von Meyenburg complex, Meyenburg complex) are named for Hanns von Meyenburg.