Glossary of Medical Terms

stage IVB nasal cavity and ethmoid sinus cancer

Stage IV nasal cavity and ethmoid sinus cancer is divided into stages IVA, IVB, and IVC. In stage IVB, cancer (1) has spread to any of the following: the back of the eye, brain, middle parts of the skull, nerves in the head that go to the brain, upper part of the throat behind the nose, and/or the base of the skull, and cancer may be found in one or more lymph nodes of any size, anywhere in the neck; or (2) is found in a lymph node larger than 6 centimeters. Cancer may also be found anywhere in or near the nasal cavity and ethmoid sinus.

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