الفهرس 
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Abstract
The results of this study revealed that the feline liver formed from 6 lobes considers the master of the body’s glands due its rule in the physiological function of the urgent organs and system.
Ultrasound is currently recommended as the primary initial imaging modality for the evaluation of the liver, gallbladder and bile ducts. Recent technical advances such as harmonic imaging and spatial compounding have improved detection of biliary stones.
Ultrasound scanning of liver determines the anatomical structure of liver parenchyma which has a uniform low to medium echogenic pattern while the gall bladder appeared as anechoic fluid-filled structures with thin echoic wall and tree of bile duct, hepatic vein, and hepatic artery appeared as anechoic fluid-filled structures within the hepatic parenchyma with more echogenicity of peripheral wallCT examination gives Identifiable anatomic structures of hepatobiliary and useful to assess the extent and character of the disease process. When the site or cause of biliary obstruction is not apparent, as in cholangiocarcinoma or distal common duct obstruction, further evaluation with contrast enhanced CT. biliary obstruction (BO) is an uncommon diagnosis in veterinary patients; however, when seen, BO is often associated with significant systemic compromise that can present a considerable diagnostic and therapeutic challenge. A variety of underlying disease processes can be the cause of obstruction, so a through diagnostic evaluation of the patient is required. Biliary obstruction is grave and needed early diagnosis with rapid surgical intervention. Hyperbilirubinemia and significant increase in the serum ALT concentrations appear with common bile obstruction.