If there is cancer in the body, lumps may appear in the neck, which are hard and not easy to be pushed by adhesion with surrounding tissues, etc. It depends on which kind of cancer, and some cancers do not show symptoms in the neck, therefore, you cannot rely on the performance of the neck to judge the physical condition, and it is recommended to go to the hospital in time to choose the appropriate treatment plan. On one hand, neck lumps caused by cancer are primary lesions, such as thyroid cancer, which has no obvious clinical symptoms in the early stage and often manifests as painless neck lumps or nodules with irregular shape and unclear boundary with surrounding tissues, and with the growth of tumor in the later stage, compression symptoms, such as dyspnea and dysphagia, may appear. On the other hand, lymph node metastasis of cancer can also lead to enlarged lymph nodes in the neck, such as lymph node metastasis of nasopharyngeal cancer, lung cancer, breast cancer, gastric cancer, etc. Malignant tumors of the blood lymphatic system can also be firstly manifested as enlarged lymph nodes in the neck, such as Hodgkin’s lymphoma and so on. In this case, the lymph nodes are enlarged, hard and poorly demarcated from the surrounding tissues. When cancer is suspected, it is necessary to actively consult the doctor and follow the doctor’s instructions for reasonable treatment.