Liver s3 calcification foci refers to the presence of strong echogenic or hyperdense images in the lower segment of the left outer lobe of the liver, and the formation of intrahepatic calcification foci may be due to intrahepatic bile duct stones, intrahepatic chronic inflammation, and parasitic infections. 1. Intrahepatic bile duct stones: Calcified foci of intrahepatic bile duct stones appear on ultrasound or CT, and the cause of the disease is related to bacterial infection of the biliary tract, parasitic infection and cholestasis. 2. Chronic inflammation in the liver: Infection with hepatitis virus, long-term alcohol consumption, taking hepatotoxic drugs, etc. may lead to chronic inflammation in the liver, and calcified foci appear in ultrasound or CT examination. 3. Parasitic infection: after parasitic infection, the worms die after treatment, which results in calcified foci on the liver. If you find liver s3 calcified foci, you must consult a doctor in time to find out the cause of the disease and treat it in time.