Inferior phrenic artery

Dr Henry Knipe et al.

The inferior phrenic arteries (IPA) are paired branches of the abdominal aorta / coeliac trunk supplying the diaphragm. Its importance lies in that the right IPA is the most common extrahepatic arterial supply of hepatocellular carcinoma


  • origin: abdominal aorta or coeliac trunk at the level of T12-L2
  • course: superiorly to the diaphragm in the retroperitoneal fat anterior to the diaphragmatic crura
  • branches:
  • supply: diaphragm, inferior vena cava, oesophagus, liver (capsule and segments II, III, VII - bare area)

Variant anatomy

Abdominal and pelvic anatomy
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Article information

rID: 35689
System: Vascular
Section: Anatomy
Tag: cases
Synonyms or Alternate Spellings:
  • Inferior phrenic artery (IPA)
  • Left inferior phrenic artery
  • Right inferior phrenic artery

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