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Hepatocellular carcinomas supplied by inferior phrenic arteries
1Third Department of Internal Medicine, Tohoku University School of Medicine, Japan.
Acta Radiologica (Stockholm, Sweden : 1987)
|August 1, 1998
Summary
Hepatocellular carcinomas (HCCs) in specific liver segments can be supplied by the inferior phrenic artery (IPA). This unusual blood supply should be suspected when CT scans show a lesion not visible on hepatic arteriography.
Area of Science:
- Hepatobiliary imaging
- Interventional radiology
- Oncology
Background:
- Hepatocellular carcinoma (HCC) is a primary liver malignancy.
- Understanding the arterial supply of HCC is crucial for treatment planning.
- The inferior phrenic artery (IPA) is an atypical source of blood supply to HCC.
Purpose of the Study:
- To investigate the role of the inferior phrenic artery (IPA) in supplying hepatocellular carcinomas (HCCs).
- To identify specific HCC locations and imaging characteristics associated with IPA supply.
Main Methods:
- Retrospective analysis of 126 HCC cases using contrast-enhanced CT and conventional arteriography.
- Inferior phrenic arteriography was used to confirm IPA supply.
- Analysis of tumor size, location (liver segments), and treatment history for HCCs supplied by IPA.
Main Results:
- Inferior phrenic artery (IPA) supply was identified in 14% (14/126) of HCC cases.
- Tumors supplied by IPA were often located in liver segments 1, 2, and 7.
- Discrepancies between contrast-enhanced CT and hepatic arteriography size suggested potential IPA supply.
Conclusions:
- Hepatocellular carcinomas (HCCs) in the bare area of the liver (segments S1, S2, S7) can receive arterial supply from the inferior phrenic artery (IPA).
- A mismatch in lesion visibility between contrast-enhanced CT and hepatic arteriography should raise suspicion for IPA supply in HCC.