Malignant nodules are not necessarily early-stage cancers, but only indicate that the nature of the nodules is malignant. Cancer staging needs to be evaluated based on a combination of tumor size, degree of infiltration, and other factors. Nodules are limited substantial skin lesions, and there is a distinction between benign and malignant nodules. Usually, malignant nodules only indicate the nature of the nodule, indicating the presence of malignant nodules in the epidermis, dermis, or subcutaneous tissues, and have little to do with cancer staging. Cancer refers to malignant tumors, and the difference between tumor and nodule is that tumor is a new organism formed by the proliferation of local tissue cells under the action of tumorigenic factors, but malignant tumors are prone to cause malignant nodules. Secondly, the staging of cancer has nothing to do with nodules, but is mainly related to factors such as the size of the tumor, the degree of tumor infiltration and whether lymph node metastasis occurs. Therefore, when the presence of malignant nodules is detected, patients need to do further relevant examinations to clarify the specific causes of the disease, and then cooperate with doctors to actively treat the disease and follow up on time.