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Four immunohistochemically different primary liver cancers in one patient
Shun-ichi Ariizumi1, Ken Takasaki, Takehito Otsubo
1Department of Gastroenterological Surgery, Tokyo Women's Medical University, 8-1 Kawada, Shinjuku-ku, Tokyo 162-8666, Japan.
Journal of Gastroenterology
|October 11, 2002
Summary
This study reports a rare case of four distinct primary liver cancers in one patient with chronic hepatitis C. The patient developed multiple tumors with unique immunohistochemical profiles over time.
Area of Science:
- Hepatology
- Oncology
- Gastroenterology
Background:
- Chronic hepatitis C virus (HCV) infection is a significant risk factor for liver cancer.
- The development of multiple primary liver cancers in a single patient is exceedingly rare.
Observation:
- A 54-year-old Japanese man with chronic hepatitis C presented with multiple liver tumors over a decade.
- Initial diagnosis in 1991 was scirrhous hepatocellular carcinoma (SHCC), negative for hepatocyte antigen (Hep) but partially positive for cytokeratin 19 (CK19).
- Subsequent surgeries revealed additional tumors including moderately differentiated hepatocellular carcinoma (HCC), a distinct SHCC, and incidental cholangiocellular carcinoma (CCC).
Findings:
- The patient developed four immunohistochemically different primary liver cancers: SHCC, HCC, a second distinct SHCC, and CCC.
- Immunohistochemical analysis revealed unique profiles for each tumor, with varying expression of Hep and CK19.
- The second SHCC showed positivity for both Hep and CK19, differing from the initial SHCC.
Implications:
- This case highlights the potential for diverse primary liver malignancies to arise in patients with chronic hepatitis C.
- Understanding the distinct immunohistochemical characteristics of multifocal liver tumors is crucial for accurate diagnosis and treatment.
- Further research is needed to elucidate the mechanisms underlying the development of multiple, immunophenotypically distinct primary liver cancers in chronic HCV infection.