Salivary gland cancer is a rare disease where cancerous cells form in the tissues of the salivary glands. Signs & Symptoms These are signs of salivary gland cancer: Fluid draining from the ear A lump ...

The incidence of benign tumor of any major salivary gland and that of the parotid salivary gland was higher in the CUD group than in the non-CUD group (0.08 vs 0.02% and 0.05 vs 0.01%, respectively).

Elevated relative risk of a benign parotid salivary gland tumor was also seen (relative risks, 5.16, 4.92, and 3.90 for any time, zero to less than five years, and five or more years, respectively).