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Arterial collaterals in intrahepatic arterial occlusion

H Pettersson

    Acta Radiologica: Diagnosis
    |July 1, 1975
    PubMed

    Insights

    Liver segmental arteries are not always end arteries. Angiography revealed intrahepatic peripheral arterial collaterals connecting different liver segments, challenging previous assumptions about hepatic vascular anatomy.

    Area of Science:

    • Vascular anatomy
    • Hepatic circulation
    • Interventional radiology

    Background:

    • The liver's segmental arteries were traditionally considered end arteries.
    • Understanding hepatic vascular variations is crucial for surgical and interventional procedures.

    Purpose of the Study:

    • To report and illustrate cases of intrahepatic peripheral arterial collaterals.
    • To challenge the concept of liver segmental arteries as exclusively end arteries.

    Main Methods:

    • Angiographic observation of two cases with intrahepatic peripheral arterial collaterals.
    • Detailed description of the collateral pathways identified.

    Main Results:

    • Angiographic evidence of collateral circulation between liver segmental arteries was observed.
    • One case showed connections between dorso-caudal and ventro-cranial subsegmental arteries.
    • Another case demonstrated collateral flow between a ventro-cranial segmental artery and the middle hepatic artery.

    Conclusions:

    • Liver segmental arteries can exhibit collateral circulation.
    • This finding has implications for understanding hepatic vascular patterns and potential interventions.

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