There is no such thing as “three signs to fear in liver nodules”. Liver nodules are formed due to the proliferation of fibrous tissue in the liver and the disturbance of the arrangement of liver trabeculae due to various reasons. When a nodule is detected in the liver, a preliminary judgment should be made based on the size and shape of the nodule, internal echogenicity, and whether the border is clear. If there is hepatitis or cirrhosis, the discovery of nodules should be highly vigilant. If the nature cannot be clarified, liver puncture biopsy can also be performed to clarify the nature of the pathology. If it is benign, it can be observed; if it is malignant, it is necessary to go to the oncology hospital for consultation and choose the appropriate treatment according to the specific situation.