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[Hepatic arterial vascular anatomy and its variants].

M De Santis1, P Ariosi, G F Calò

  • 1Dipartimento di Scienze Mediche, Oncologiche e Radiologiche dell'Università , Sezione di Scienze Radiologiche, Modena e Reggio Emilia.

La Radiologia Medica
|January 10, 2001
PubMed
Summary
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Hepatic artery anatomy shows significant variation in cancer patients, with typical anatomy in 52%. Understanding these anatomical variants is crucial for successful interventional angiographic procedures.

Area of Science:

  • Vascular anatomy
  • Interventional radiology
  • Oncologic imaging

Context:

  • Hepatic artery anatomical variations can impact angiographic procedures.
  • Previous classifications, like Michels' (1955), provide a framework for understanding these variations.
  • The prevalence of these variants in cancer patients undergoing angiography is not fully characterized.

Purpose:

  • To investigate the frequency of hepatic artery anatomical variants in patients undergoing angiography for liver tumors.
  • To compare the observed frequencies with established classifications.
  • To highlight the importance of recognizing these variants for interventional procedures.

Summary:

  • A review of 150 liver tumor angiograms revealed that typical hepatic artery anatomy (Type I) was present in 52% of patients.

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  • Anatomical variants were observed in 48% of cases, with specific frequencies for types II, III, IV, V, VI, VII, and IX.
  • A notable 14.7% of patients exhibited vascular anatomy not fitting Michels' classification, potentially influenced by neoplastic neovascularization.

    • Impact:

    • The findings underscore that "typical" hepatic artery anatomy is less common than previously assumed.
    • Accurate knowledge of hepatic artery variants is essential for interventional radiologists to optimize procedural planning and material selection.
    • This study contributes to a better understanding of vascular variations in the context of liver cancer treatment.