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stage IVA hypopharyngeal cancer (... HY-poh-fuh-RIN-jee-ul KAN-ser)
Stage IV hypopharyngeal cancer is divided into stages IVA, IVB, and IVC. In stage IVA, cancer (1) has spread to cartilage around the thyroid or trachea, the bone under the tongue, the thyroid, or nearby soft tissue. Cancer may have spread to one lymph node on the same side of the neck as the tumor and the lymph node is 3 centimeters or smaller; or (2) has spread to one lymph node on the same side of the neck as the tumor (the lymph node is larger than 3 centimeters but not larger than 6 centimeters) or to lymph nodes anywhere in the neck (affected lymph nodes are 6 centimeters or smaller), and one of the following is true: (1) cancer is found in one area of the hypopharynx and/or is 2 centimeters or smaller; or (2) cancer is found in more than one area of the hypopharynx or in nearby tissues, or is larger than 2 centimeters but not larger than 4 centimeters and has not spread to the larynx (voice box); or (3) cancer has spread to the larynx or esophagus and is more than 4 centimeters; or (4) cancer has spread to cartilage around the thyroid or trachea, the bone under the tongue, the thyroid, or nearby soft tissue.