The difference between occupation and cancer

Cancer usually refers to a malignant tumor. It is a genetic change in the body under the action of carcinogenic factors. Uncontrolled cell proliferation forms a tumor. The tumor continues to grow, breaks through the capsule, invades surrounding tissues and organs, and can spread to distant organs and regions. Lymph node metastasis. An occupying lesion is an imaging term that usually refers to a cystic or solid mass in an organ seen on ultrasound, CT, or MRI. An occupying lesion includes benign lesions such as cysts, abscesses, or other benign tumors, as well as malignant tumors. Therefore, an occupying lesion includes a larger area, and cancer is included in an occupying lesion.