The parathyroid gland is the largest salivary gland in the body. Located in front of the ear, this gland is responsible for the production of most of the saliva produced during meals. Benign (benign) and malignant (malignant) masses can develop in the parathyroid gland. In general, up to 80% of the masses that develop in the parathyroid gland are benign masses. However, malignant masses can be seen in different pathological types. Parathyroid cancer may manifest itself as swelling in front of the ear, facial paralysis, swelling in the neck. Numbness in the face or jaw can also be seen less frequently. In very advanced stages, it can cause large non-healing wounds on the skin in front of the ear. Treatment of parathyroid cancer is primarily surgical. The size and width of the surgery varies according to the tumour tube and tumour stage. You can learn detailed information about this surgery from your surgeon. After surgery, radiotherapy and chemotherapy can be given according to the stage of the disease.