A bulge below the laryngeal node may be caused by lymph node disease, thyroid disease, localized cysts and other problems. You need to go to the ENT Head and Neck Surgery Department of the hospital for further examination to clarify the diagnosis and standardize the treatment. 1. Lymph node diseases: generally due to acute and chronic inflammation in the drainage area of lymph nodes and lymph nodes caused by non-specific inflammation, manifested as enlarged lymph nodes, lymph node pain, and bulge under the laryngeal node, etc. In addition, lymph node metastasis of malignant tumors and enlarged lymph nodes in the case of lymphatic cancer can also be manifested as a bulge under the laryngeal node. 2. Thyroid disease: thyroid nodule, thyroid tumor, hyperthyroidism, thyroid cancer, etc., which manifests as thickening of the neck, enlargement of thyroid gland, and the symptom of bulge under the laryngeal node. 3. Localized cysts: localized in the upper fossa of the sternum, below the thyroid cartilage, there may be congenital cysts, which may also be manifested as a bulge below the laryngeal node. A bulge under the laryngeal knot may also be other serious diseases, you need to go to the hospital as soon as possible, under the guidance of the doctor’s instructions for standardized examination and treatment.