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Related Concept Videos

Esophageal Varices-II: Clinical Features and Management01:28

Esophageal Varices-II: Clinical Features and Management

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Esophageal varices often manifest as gastrointestinal bleeding episodes, presenting symptoms like hematemesis (vomiting of blood), hematochezia (passing fresh blood via the rectum), and melena (black, tarry stools). Other signs can include weight loss, anorexia, abdominal discomfort, jaundice, pruritus, altered mental status, and muscle cramps.
In the initial assessment, a thorough review of the patient's medical history is vital to identify risk factors such as liver disease, alcohol...
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Esophageal Varices-I: Introduction01:24

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Esophageal varices are dilated, tortuous veins which are found mainly in the submucosa of the lower esophagus but which may also appear higher up or extend into the stomach. They develop due to increased pressure in the portal venous system, often as a result of liver cirrhosis. This condition scars and damages the liver, impeding normal blood flow through the portal vein. To compensate, blood seeks alternative pathways, forming fragile new vessels (varices) in the esophagus and stomach. These...
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Related Experiment Video

Updated: Mar 21, 2026

Laparoscopic Anatomic S7+S8d Resection Preserving Inferior Right Hepatic Vein and S6 with Right Hepatic Vein Transection
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Published on: December 30, 2025

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Vena cava encirclement predicts difficult native hepatectomy.

Fabrizio Panaro1, Gildas Boisset1, Gérald Chanques2

  • 1Departments of General Surgery, Division of Transplantation, College of Medicine, University of Montpellier, Montpellier, France.

Liver Transplantation : Official Publication of the American Association for the Study of Liver Diseases and the International Liver Transplantation Society
|May 6, 2016
PubMed
Summary
This summary is machine-generated.

Liver anatomy, specifically dorsal sector encirclement of the inferior vena cava (IVC), impacts recipient hepatectomy outcomes. This anatomical variation increases transfusion needs and reoperation risk for IVC bleeding during liver transplantation (LT).

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Area of Science:

  • Hepatobiliary Surgery
  • Transplantation Surgery
  • Surgical Anatomy

Background:

  • Recipient hepatectomy is a complex liver transplantation (LT) procedure with significant risks.
  • Current mortality scores (Child-Pugh, MELD) do not account for recipient liver anatomy.
  • The dorsal sector's anatomical relationship with the inferior vena cava (IVC) is a critical, unaddressed factor.

Purpose of the Study:

  • To investigate the influence of cirrhotic liver dorsal sector anatomy on hepatectomy morbidity and mortality.
  • To assess the impact of dorsal sector encirclement of the IVC on perioperative outcomes.

Main Methods:

  • A multicenter retrospective study of 320 patients undergoing hepatectomy from 2013-2014.
  • Measurement of dorsal sector encirclement of the IVC.
  • Correlation analysis of anatomical findings with clinic-biological data, transfusion requirements, and reoperation rates.

Main Results:

  • Complete IVC encirclement by the dorsal sector was present in 23% of patients.
  • Complete IVC encirclement correlated with increased packed red blood cell (PRBC) transfusions (7 vs. 4 units) and a 31% higher risk of early reoperation for IVC bleeding.
  • Dorsal sector hypertrophy was linked to alcoholic cirrhosis and inversely correlated with MELD and Child scores.

Conclusions:

  • Dorsal sector anatomy, particularly complete IVC encirclement, is an independent risk factor for hemorrhage and reoperation after hepatectomy.
  • Incorporating liver morphologic assessment, specifically dorsal sector-IVC relationship, may improve risk stratification for liver transplantation.
  • This anatomical consideration is crucial for optimizing surgical planning and patient outcomes in complex hepatectomy procedures.