In stage III salivary gland cancer, (1) the tumor is not larger than 4 centimeters and has spread to a single lymph node on the same side of the body as the tumor and the lymph node is 3 centimeters or smaller; or (2) the tumor is larger than 4 centimeters and/or has spread to soft tissue around the affected gland; cancer may have spread to a single lymph node on the same side as the tumor and the lymph node is 3 centimeters or smaller.