Neck is the neck. There are two main types of cancer in the neck, one is primary tumor, with laryngeal cancer, hypopharyngeal cancer, tonsil cancer and thyroid cancer being the most common; the other is metastatic tumor, mostly caused by the metastasis of cancer originating from oral cavity, nasopharynx, lung, breast, gastrointestinal tract and other parts to the neck, clinical features are not limited to three, common features include the following: 1. Main symptoms: neck lump is the first symptom of most patients symptoms as well as the main symptom. The mass formed by cancer is usually hard and not easy to push, and can increase rapidly in a short period of time. In addition, local lymph node metastasis can also lead to neck lump, which is usually an enlarged lymph node. 2. Concomitant symptoms: Cancer compression of trachea can lead to different degrees of breathing difficulties. If there is tracheal infiltration, there may be hemoptysis and cough; involvement of esophagus may cause dysphagia; invasion of laryngeal return may often lead to hoarseness. The sympathetic nerve in the neck will be compressed by the cancer and Horner’s syndrome will appear, manifested as pupil narrowing, eyelid drooping, eye sunken, no sweating on the affected side of the forehead, etc.; 3. Systemic symptoms: Cancer cells consume a lot of nutrients and energy of the body, so patients often have systemic symptoms such as low fever, weakness and weight loss. In case of medullary thyroid carcinoma, the body can produce calcitonin, prostaglandin and other substances, and patients can show endocrine disorders such as facial flushing and excessive sweating. In case of advanced multi-organ metastasis, the patient may be cachectic, with extreme emaciation, anemia and weakness, bedridden and unable to take care of themselves, or even systemic organ failure.