الفهرس 
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Abstract
Aim of the work: To test the reliability of fibroscan in detection of fibrosis in patients with Budd Chiari syndrome before and after endovascular intervention (after elimination of hepatic congestion).
Background: transient elastography (TE) is a noninvasive methodology that has been used to monitor liver stiffness in patients with chronic viral hepatitis. One of the limitations for accurate assessment of liver fibrosis by TE is the liver congestion. Liver congestion can result from Budd Chiari syndrome (BCS).The treatment of BCS is through restoring the flow of the blood between the portal vein to the inferior vena cava, which will lead to decongestion of the liver.TE, will be tested after liver decongestion for proper detection of liver fibrosis.
Patients and methods: This was a prospective cohort study conducted on 25 Egyptian patients with confirmed diagnosis of primary Budd-Chiari Syndrome (BCS) in the period from March 2017 to September 2019. TE was performed three days before endovascular intervention and three months after it. Liver biopsy was taken during the intervention for assessment of METAVIR score. Comparison between TE assessments before and after intervention in detection of the degree of liver fibrosis in comparison to METAVIR score measured in liver biopsy.
Results: FVLM is the most common hypercoagulable cause in the involved patients. There was significant DROP in Liver Stiffness Measurements (LSM) measured three months post-intervention indicating improvement of liver fibrosis after relieving liver congestion but still not correlated to the METAVIR scores measured in the liver biopsy.
Conclusion: BCS affects all races, usually during the third and fourth decades of life. The most common hypercoagulable state in Egyptian patients suffering from BCS was FVLM. Liver congestion has high impact on Liver stiffness measurement giving overestimation which improves significantly after decongestion of the liver by the endovascular intervention.