NCI Dictionary of Cancer Terms
The NCI Dictionary of Cancer Terms features 8,614 terms related to cancer and medicine.
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- stage IV esophageal squamous cell carcinoma
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Stage IV is divided into stages IVA and IVB, depending on where the cancer has spread. In stage IVA, cancer has spread (1) into the diaphragm, pleura, sac around the heart, azygos vein, or peritoneum. Cancer is found in 3 to 6 lymph nodes near the tumor; or (2) into nearby structures, such as the aorta, airway, or spine. Cancer may be found in 0 to 6 lymph nodes near the tumor; or (3) to 7 or more lymph nodes near the tumor. In stage IVB, cancer has spread to other parts of the body, such as the liver or lung.