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English Wikipedia
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Cystic tumors of the liver: a practical approach Del Poggio P; Buonocore MWorld J Gastroenterol 2008[Jun]; 14 (23): 3616-20Biliary cyst tumors (cystadenoma and cystadeno-carcinoma) are an indication for liver resection. They account for only 5% of all solitary cystic lesions of the liver, but differential diagnosis with multiloculated or complicated biliary cysts, atypical hemangiomas, hamartomas and lymphangiomas may be difficult. The most frequent challenge is to differentiate biliary cyst tumors from hemorrhagic cysts. Computerized tomography (CT) and magnetic resonance imaging (MRI) are often not diagnostic and in these cases fine needle aspiration (FNA) is used to confirm the presence of atypical biliary cells. FNA, however, lacks adequate sensitivity and specificity and should always be used in conjunction with imaging. Pre-operative differentiation of cystadenoma from cystadenocarcinoma is impossible and surgery must be performed if a biliary cyst tumor is suspected. When multiple cystic lesions are observed throughout the liver parenchyma, it is important to exclude liver metastasis, of which colonic cancer is the most common primary site. Multiple biliary hamartomas (von Meyenburg complex) can appear as a mixture of solid and cystic lesions and can be confused with cystic metastasis. Strong and uniform T2 hyperintensity on MRI is usually diagnostic, but occasionally a percutaneous biopsy may be required.|Bile Duct Neoplasms/*pathology/surgery[MESH]|Bile Ducts, Intrahepatic/*pathology/surgery[MESH]|Biliary Tract Surgical Procedures[MESH]|Biopsy, Fine-Needle[MESH]|Cystadenocarcinoma/*pathology/surgery[MESH]|Cystadenoma/*pathology/surgery[MESH]|Cysts/*pathology[MESH]|Diagnosis, Differential[MESH]|Humans[MESH]|Liver Diseases/*pathology[MESH]|Liver Neoplasms/*secondary[MESH]|Magnetic Resonance Imaging[MESH]|Neoplasm Invasiveness[MESH]|Predictive Value of Tests[MESH]|Tomography, X-Ray Computed[MESH] |
