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Large inferior right hepatic vein. Clinical implications
J Champetier1, H Haouari, J F Le Bas
1Department of Anatomy, Faculty of Medicine of Grenoble, La Tronche, France.
Surgical and Radiologic Anatomy : SRA
|January 1, 1993
Summary
An extra-wide right inferior hepatic vein, a common variation in liver anatomy, significantly impacts venous drainage. This finding is crucial for surgical planning and understanding liver circulation.
Area of Science:
- Anatomy
- Vascular Surgery
- Medical Imaging
Background:
- The right middle and inferior hepatic veins are typically small, but variations exist.
- An extra-wide right inferior hepatic vein alters normal venous drainage of the liver's right lobe.
Purpose of the Study:
- To investigate the incidence and characteristics of extra-wide right inferior hepatic veins (RIHV).
- To determine the clinical significance of RIHV in liver surgery and pathology.
Main Methods:
- Analysis of 125 anatomical liver specimens, including injection-corrosion, formolised livers, and cadaveric sections.
- Review of existing literature on hepatic vein variations.
Main Results:
- Extra-wide RIHV (≥0.5 cm caliber) found in 9-16% of specimens, depending on the method.
- RIHV is consistently located near the liver's visceral surface, primarily draining segment VI.
- Rarely, RIHV may predominate over the right superior hepatic vein.
Conclusions:
- The presence of an extra-wide RIHV is a significant anatomical variation impacting liver lobe venous drainage.
- Detection via MRI and intraoperative ultrasonography is vital for surgical procedures like subtotal hepatectomy.
- RIHV can play a role in compensatory circulation in certain pathological conditions.