Classification
A liver mass may be classified into several subtypes based on number of nodules, type of histopathology, and consistency.
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| | | | | | | Based on number of nodules | | | | | | | | | Type of histopathology | | | | | | | | | Imaging/consistency | | | | | | |
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| | | Solitary | | | | | | Multiple | | Benign | | | | Malignant | | Simple | | | | | | Cystic | |
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| WHO Classification of Liver Tumors
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| Benign Tumors
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Malignant Tumors
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| Epithelial
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Hepatocytes
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- Focal nodular hyperplasia
- Hepatocellular adenoma
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- HCC
- Fibrolamellar carcinoma
- Hepatoblastoma
- Carcinosarcoma
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| Biliary cells
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- Intrahepatic bileduct adenoma
- Intrahepatic bileduct cystadenoma
- Biliary papillomatosis
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- Cystadenocarcinoma
- Cholangiocarcinoma
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| Non-Epithelial
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Mesenchymal
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- Hemangioma
- Lymphangioma
- Lymphangiomatosis
- Angiomyolipoma
- Infantile Hemangioma
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- Hemangioendothelioma
- Primary lymphoma
- Angiosarcoma
- Epitheloid
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| Classification of Hepatic Cysts
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- Simple cysts
- Multiple cysts arising in the setting of polycystic liver disease (PCLD)
- Parasitic cysts
- Cystic tumors
- Cystadenoma, cystadenocarcinoma, squamous cell carcinoma
- Abscesses
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