Calcified foci are calcium deposits present on an organ of the organism, a kind of high-density image of calcium deposits, mostly caused by tuberculosis, inflammation and so on, and can occur in the liver, lungs, kidneys and prostate and other organs. 1. Calcified foci in the liver: usually caused by intrahepatic bile duct stones, hepatic tuberculosis, liver abscess and chronic hepatitis. 2. Calcified foci in lungs: patients suffering from tuberculosis are prone to form calcified foci after cure. 3. Calcified foci in kidney: patients suffering from renal tuberculosis and kidney stones are likely to develop calcified foci in kidney. 4. Calcified foci of prostate: it is one of the common prostate lesions, which is easy to occur when there are diseases such as prostate hyperplasia, prostate tuberculosis, prostate inflammation and prostate tumor. Calcified foci may also occur in other organs, such as the spleen and the breast. When calcified foci appear in organs, it is recommended to go to the hospital for regular checkups and to clarify the specific causes of the disease under the guidance of professional physicians.