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| | Stage IV is divided into stages IVA, IVB, and IVC. In stage IVB, the tumor has spread to one or more lymph nodes that are larger than 6 centimeters (about 2 inches); or cancer has spread to the muscles or bones in the oral cavity (mouth), or to the base of the skull, and/or the carotid artery (blood vessel that carries blood from the heart to the head). Cancer may also have spread to one or more lymph nodes in the neck. |
| Previous Definitions: | stage IVA laryngeal cancer, stage IVA lip and oral cavity cancer, stage IVA pancreatic cancer, stage IVB hypopharyngeal cancer, stage IVB laryngeal cancer | | Next Definitions: | stage IVB pancreatic cancer, stage IVC hypopharyngeal cancer, stage IVC laryngeal cancer, stage IVC lip and oral cavity cancer, stage V Wilms tumor |
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