Budd-Chiari Syndrome

Contents 1 Signs and Symptoms 2 Pathophysiology and etiology 3 Diagnostic 4 Complications 5 Therapy 6 Links 6.1 Related articles 6.2 References

Budd-Chiari syndrome is hepatic veins occlusion. The consequences are portal hypertension because of blood congestion in liver and portal venous system and finally liver cirrhosis and failure. This syndrome is quite infrequent.^[1]

Note: hepatic veins bring the blood from liver to inferior vena cava (see picture).

edit Signs and Symptoms

The acute signs of the syndrome may include: severe abdominal pain, jaundice, hepatomegaly, ascites and other symptoms associated with liver problems. Most patients have a slower onset^[2] and it was discovered accidentally they may be symptom-free and or may already have progressive cirrhosis and liver failure.

edit Pathophysiology and etiology

The most common cause is hepatic veins thrombosis (75%)^[2] in patients with primary predisposition (coagulopathies like Protein C or Protein S deficiency, Leiden mutation...) or other factors like:

• polycythemia vera;
• use of oral contraceptives;
• trauma (cause of a new abnormality of hepatic vein);
• pregnancy.

Other causes of hepatic veins occlusion (25%)^[2] can be:

• hepatocellular carcinoma;
• metastasis in liver;
• infections in liver (TB).

edit Diagnostic

There are a few diagnostic methods for hepatic veins examination:

• USG of liver with Doppler;
• CT, CT angiography;

Other methods:

• lab: elevated liver markers (AST, ALT), possible coagulopathy;
• hematology: RBC abnormalities, thrombocytopathy...

But there is usually portal hypertension symptoms domination (ascites, esophageal varices). That is the reason, why Budd-Chari syndrome should be always excluded in patients with portal hypertension and liver cirrhosis!

edit Complications

• portal hypertension (with all consequences);
• nonalcoholic liver cirrhosis and failure;
• pulmonary embolism.

edit Therapy

• therapy of the cause:
  • thrombophilia (heparin, warfarin);
• therapy of consequences:
• therapy of portal hypertension;
• liver transplantation.

edit Links

edit Related articles

• Cirrhosis
• Portal Hypertension
• Ascites

edit References

1. ↑ KASPER, Dennis L – FAUCI, Anthony S – LONGO, Dan L, et al. Harrison's principles of Internal Medicine. 16th edition. New York : McGraw-Hill Companies, Inc, 2005. 2607 pp. pp. 1892-1896. ISBN 0-07-139140-1.
2. ↑ ^{a b c} Wikipedia.org. Budd–Chiari syndrome [online]. Wikipedia.org, ©2011. The last revision 2011-08-13, [cit. 2011-09-19]. <http://en.wikipedia.org/wiki/Budd-Chiari_syndrome>.