Whether neck nodules are cancerous or not is related to the cause of the symptoms. There are many causes of neck nodules, and the common causes include lymphadenitis, sebaceous cysts, thyroid diseases such as nodular goiter, thyroid cysts, thyroid adenomas, thyroid cancer, etc., soft tissue tumors of neck or malignant tumors of nasopharyngeal area such as lipoma, fibroma, leiomyosarcoma, nerve sheath tumors, nasopharyngeal carcinoma and so on. Others: systemic diseases such as leukemia, lymphoma, metastasis of malignant tumors, resulting in enlarged lymph nodes in the neck, which will form lymph nodes in the neck. Generally, lymphadenitis, sebaceous cysts, will not be cancerous, while thyroid diseases such as nodular goiter, thyroid cysts, thyroid adenomas have a lower rate of cancerous transformation, and thyroid cancer forms neck nodules itself as a cancerous mass. Neck soft tissue tumors such as lipoma, fibroma, leiomyosarcoma, nerve sheath tumor, in general, are benign tumors with low cancer rate, while malignant tumors in nasopharynx such as nasopharyngeal carcinoma are highly malignant. In other cases of leukemia, lymphoma, malignant tumor metastasis and other systemic diseases, the nodules are caused by tumor metastasis, and the lymph nodes may contain tumor cells. It is recommended to go to the hospital in time when nodules appear on the neck, combined with their own symptoms and laboratory imaging tests, to clarify the diagnosis of the disease, so as not to delay the condition.