Sarcomatoid Liver Tumor Characterization and Imaging
Summary
Sarcomatoid liver tumours represent a rare and aggressive subset of primary hepatic malignancies, exhibiting a biphasic histology that combines epithelial carcinomatous elements with mesenchymal sarcomatoid components. These tumours often present in the setting of chronic liver disease and display rapid growth, extensive necrosis and a propensity for vascular invasion and early metastasis. Imaging plays a central role in detection, characterisation and preoperative planning. Computed tomography and magnetic resonance imaging typically reveal large, subcapsular masses with heterogeneous signal intensity, rim-like or progressive enhancement patterns and frequent evidence of capsular breach or satellite nodules. The sarcomatoid component contributes to atypical imaging features, such as cystic degeneration, haemorrhage and heterogeneous perfusion. Accurate preoperative identification requires a combination of multiphase imaging, serological marker assessment and, increasingly, image-guided biopsy targeting viable tumour regions. Improved molecular profiling has begun to unveil distinct genomic alterations that may inform prognosis and guide targeted therapies. Despite advances in diagnostic techniques, overall survival remains poor, underscoring the need for refined diagnostic criteria and novel therapeutic approaches.
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Sarcomatoid Liver Tumor Characterization and Imaging publication trend
The graph below shows the total number of articles in sarcomatoid liver tumor characterization and imaging across all publications each year (not limited to Nature Index journals).
Technical terms
Sarcomatoid transformation: Process by which epithelial tumour cells acquire mesenchymal morphology and immunophenotypic features, leading to spindle-cell components.
Hepatocellular carcinoma (HCC): Primary malignancy of the liver arising from hepatocytes, often in the context of chronic hepatic injury.
Intrahepatic cholangiocarcinoma (ICC): Cancer originating from bile duct epithelial cells within the liver parenchyma.
Magnetic resonance imaging (MRI): Non-ionising imaging modality using magnetic fields and radiofrequency pulses to generate high-contrast soft-tissue images.
Contrast enhancement: Use of intravenously administered agents to accentuate vascular and perfusion characteristics of lesions on imaging studies.
Spindle cells: Elongated, fusiform cells characteristic of mesenchymal tumour components, often associated with aggressive behaviour.
CDK4/6 inhibitors: Targeted therapies that block cyclin-dependent kinases 4 and 6, key regulators of the cell-cycle G1-S transition, under investigation for tumours with cell-cycle gene aberrations.
References
- Imaging and clinical features of primary hepatic sarcomatous carcinoma. Cancer Imaging (2018).
- Sarcomatoid hepatocellular carcinoma: From clinical features to cancer genome. Cancer Medicine (2021).
- MRI Features of Hepatic Sarcomatoid Carcinoma Different From Hepatocellular Carcinoma and Intrahepatic Cholangiocarcinoma. Frontiers in Oncology (2021).
- Sarcomatoid hepatocellular carcinoma mimicking hepatic abscess. Medicine (2020).
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