A case of granulocyte colony-stimulating factor-producing intrahepatic sarcomatoid cholangiocarcinoma.
2021
Here, we report a rare case of intrahepatic sarcomatoid cholangiocarcinoma that expressed granulocyte colony-stimulating factor (G-CSF). An 87-year-old man who presented with a continuous high-grade fever and cough over two weeks, and increased inflammatory response was admitted to our hospital. Laboratory tests revealed marked granulocytosis and high serum levels of G-CSF and interlukin-6. Imaging studies showed a huge liver mass in his right lobe and intrahepatic metastasis. He died of progressive disease. Pathological findings of the primary liver tumor at autopsy showed sarcomatous change; the specimen was positive for cytokeratins (AE1/AE3, cytokeratin-7, cytokeratin-19) and G-CSF. Few cases of G-CSF-producing intrahepatic sarcomatoid cholangiocarcinoma have been reported.
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