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Lymph Nodes You have more than 20 lymph nodes on each side of your neck. These nodes drain fluids from the face, mouth, and throat. Lymph nodes can enlarge due to viral or bacterial infections , or as a result of cancer cells spreading (metastasis) . What is Neck Dissection? Head and neck cancers frequently metastasize to the lymph nodes in the neck. The goal of neck dissection is to remove the lymph nodes where cancer cells are at the highest risk of spreading . Your surgeon

The adrenal glands are two small, triangular-shaped glands located on top of each kidney. Their outer layer, the adrenal cortex , produces hormones such as cortisol. These hormones influence the body's salt and water balance , stress response , metabolism , the immune system , and sexual development and function . The inner layer, the adrenal medulla , produces hormones such as epinephrine (adrenaline). Adrenaline increases blood pressure and heart rate when the body is under

The parathyroid glands are small glands located around or on top of the thyroid gland. Normally, each of these four glands is about the size of a lentil . They secrete a hormone called parathyroid hormone, which determines how much calcium is stored in the bones and how much calcium is found in the blood. When these glands enlarge, they can secrete excessive amounts of hormones. This condition is called hyperparathyroidism . In this state, calcium is drawn from the bones into

The thyroid gland is a small, butterfly-shaped gland located in the neck. This gland helps control the rate at which your body functions and how your body works. It produces hormones that are transported through the bloodstream to other parts of the body. Thyroid hormones tell the body how fast to work and how to use energy. When you're healthy, your thyroid works like an air conditioner; it kicks in when needed and shuts off when necessary. It stops producing thyroid hormone