With the popularity of ultrasound and CT, healthy people are often told that they have intrahepatic bile duct stones during physical examinations, but in fact, what most people call “intrahepatic bile duct stones” may actually be focal intrahepatic calcifications that are not harmful to the body. The detection rate of calcified focal lesions in the liver has also increased significantly in recent years, and the question of whether intrahepatic calcified foci are a disease and whether they require treatment has been a problem for the general public. I. What is intrahepatic calcification foci Intrahepatic calcification foci may appear as strong echogenic like stones on ultrasound or as high-density images in the liver on CT examination. Therefore, sometimes intrahepatic calcified foci and intrahepatic bile duct stones are easily confused with each other. Therefore, what many people call “intrahepatic bile duct stones” are likely to be intrahepatic calcified foci. Although both intrahepatic calcified foci and intrahepatic bile duct stones have similar strong echogenic masses and acoustic shadows, calcified foci usually do not cause dilatation of the hepatic bile ducts. 2. Where do intrahepatic calcified foci come from? 1. intrahepatic bile duct stones, which are the most common factor; 2. chronic inflammation or trauma in the liver; 3. parasitic infection; 4. calcification of benign and malignant liver tumors and intrahepatic metastases; 5. in summary, intrahepatic calcified foci usually consist of “scars” formed after inflammation of liver parenchymal cells, or they may be the result of partial calcification of the intrahepatic bile duct wall. They are often the result of inflammation, parasites, and other infections. Simple calcification foci have no obvious symptoms, usually do not cause pain, do not cause significant harm to the body, and do not require treatment.