In general, the chances of benign nodules in the liver are still very high. Of course, in a few cases, there are some special cases, mainly distinguished from malignant tumors of the liver. Benign nodules, in terms of imaging appearance, tend to have a regular shape such as round and oval. The margins of benign nodules are observed to be generally neat. This is due to the growth characteristics of benign nodules, which generally do not show invasive growth, while malignant liver nodules, which have strong tissue infiltration, have margins that spread like tree roots inside normal liver tissue. In liver nodules detected by imaging at present, doctors usually recommend a review when they observe a more regular shape and smaller size. There is a reason for this; malignant liver nodules usually have a relatively fast growth rate and can be judged by regular review and comparison of changes in appearance and volume. For larger nodules that are not so regular in shape, the doctor usually also recommends some enhanced CT examinations, which are currently used to determine the infiltration around the nodule through contrast contrast development, because the edges of malignant nodules will have a rich blood supply, which allows high-density marginal images to be obtained, thus facilitating the determination of benign or malignant nodules. The benign rate of liver nodules is relatively high, but in some special cases where malignant changes are suspected, relevant examinations, such as enhanced MRI, enhanced CT and, if necessary, PETCT, are also required to further clarify the benign or malignant nature of the nodules.