Sonographic features of cirrhosis The liver may be increased in size in the early stages of cirrhosis and later become small with relative enlargement of the caudate and/or left hepatic lobe. The liver has a nodular contour and a more echogenic and heterogeneous echotexture. Associated features of portal hypertension may be seen, which include ascites, …
Ultrasound appearance of acute hepatitis Acute hepatitis can result in liver edema, which manifests on US as diffusely decreased hepatic echogenicity with increased echogenicity of the portal triads (the “starry sky” sign). There can be associated hepatomegaly and gallbladder wall thickening.
Ultrasound appearance of a target lesion in the liver and its significance A target lesion on US is characterized as a hepatic lesion with an echogenic center and a peripheral hypoechoic rim. This appearance has a high association with malignancy, including metastatic disease, hepatocellular carcinoma, and lymphoma. In contrast, lesions with a reverse target appearance …
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What is the most common cause of increased hepatic echogenicity? An echogenic liver is defined as increased echogenicity of the liver parenchyma compared with the renal cortex. Increased hepatic echogenicity, also known as hepatic steatosis or fatty liver, refers to the increased brightness or echogenicity of the liver tissue seen on imaging studies such as …
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How are the hepatic veins and portal veins differentiated on Ultrasound? Portal veins travel with hepatic arteries and bile ducts (the portal triad). A connective sheath surrounds this portal triad with resulting echogenicity of the portal vein walls. In contrast, the hepatic veins travel in isolation and have almost imperceptible walls
What is the sonographic appearance of the liver? The liver is normally homogeneous in echotexture, equal to or slightly more echogenic than the renal cortex, and hypoechoic compared to the spleen and pancreas. Along the midhepatic line, the liver is normally <15.5 cm in length. The hepatic veins are readily visible sonographically and help define hepatic …
Most common indications for abdominal ultrasound • Abdominal, flank, and/or back pain. • Abnormal laboratory values (e.g., abnormal liver function tests). • Palpable abdominal mass. • Signs or symptoms referred from abdomen (e.g., jaundice or hematuria).