HEAD AND NECK CANCER GUIDE Head and Neck Cancer Overview Head and Neck Cancer Symptoms Head and Neck Cancer Causes Head and Neck Cancer Types Oral Cancer Laryngeal Cancer Throat Cancer Cancer of Salivary Glands Nasal and Sinus cancer Head and Neck Cancer Diagnosis Head and Neck Cancer Treatment Head and Neck Cancer Prevention Cancer of Salivary Glands Salivary glands produce saliva that keeps your mouth wet and helps in swallowing and digestion. There are 3 main pairs of salivary glands. These are:parotid glands – located between cheeks and ears;sublingual glands – under the tongue;submandibular glands – located below each side of the jaw.Salivary gland cancer most commonly affects the parotid glands.Symptoms of salivary gland cancer are:swelling near the jaw, neck, or mouthswelling without pain in the affected areadifficulty in swallowingdifficulty in opening the mouth widedifficulty in moving a single part of the face, known as facial nerve paralysis