[Extrahepatic vessels depending on the hepatic artery. Identification and management]

Area of Science:

• Interventional Radiology
• Vascular Anatomy
• Hepatobiliary Oncology

Background:

• Malignant liver tumors often require endovascular treatment when surgery is not an option.
• Effective local disease control is achievable with endovascular therapies.
• Accurate identification of tumor vascular supply is critical for successful treatment.

Purpose of the Study:

• To highlight the importance of understanding hepatic vascular anatomy for endovascular liver tumor treatment.
• To illustrate common and critical extrahepatic vessels originating from the hepatic artery.
• To emphasize how anatomical knowledge improves treatment safety and efficacy.

Main Methods:

• Review of endovascular procedures for liver tumors.
• Angiographic analysis to identify afferent vascular supply to lesions.
• Documentation and categorization of extrahepatic vessels arising from the hepatic artery.

Main Results:

• Inadequate detection of afferent pedicles can lead to undertreatment and apparent relapse.
• Passage of materials into non-hepatic vessels is a known complication.
• Representative examples of extrahepatic vessels originating from the hepatic artery were identified.

Conclusions:

• Precise knowledge of hepatic and extrahepatic vascular anatomy is essential for safe and effective endovascular liver tumor treatment.
• Thorough pre-procedural assessment prevents complications and improves local tumor control.
• Identifying all vessels supplying the tumor ensures complete treatment and reduces recurrence risk.