Neck dissection is a major surgery done to remove lymph nodes that contain cancer. It is done in the hospital. Before surgery, you will receive general anesthesia. This will make you sleep and unable to feel pain.The amount of tissue and the number of lymph nodes that are removed depend on how far the cancer has spread. There are 3 main types of neck dissection surgery:Radical neck dissection. All the tissue on the side of the neck from the jawbone to the collarbone is removed. The muscle, nerve, salivary gland, and major blood vessel in this area are all removed.Modified radical neck dissection. This is the most common type of neck dissection. All lymph nodes are removed. Less neck tissue is taken out than with radical dissection. This surgery may also spare the nerves in the neck and, sometimes, the blood vessels or muscle.Selective neck dissection. If cancer has not spread far, fewer lymph nodes have to be removed. The muscle, nerve, and blood vessel in the neck may also be saved.