[Von Meyenburg complexes. case report].

Von Meyenburg complexes is one of the polycystic liver diseases, characterized by bile duct hamartoma. These cysts come from the biliary tract but the cysts do not communicate with them. Because of asymptomatic course of the lesions usually are diagnosed in the course of diagnostic for another reason. It is not possible to define the entire diagnosis based upon ultrasonography imaging, as cyst could mimic metastasis, micro-abscesses and multiple focal nodular lesions. Because of the small size of the lesion (0.5-15 mm) usually inconclusive is also computed tomography. On the basis of magnetic resonance imaging (MRI) and cholangio-MRI we can determine the diagnosis of the complexes. Liver biopsy is obligatory in case of suspicion of neoplastic process. These complexes do not require treatment, but long-term follow-up is indicated because of the possibility to more frequent cholangiocarcinoma in patient with von Meyenburg complexes. It is probably the first case report of the von Meyenburg complexes described in Poland.