Published: Aug. 22, 2011
Updated: Aug. 22, 2011
Head and neck cancer is classified into stages to indicate how large the cancer is and how far it has spread.
Throat cancer is classified into five stages, with stage IV being the most advanced.
Some cancers of the sinus, such as cancer of the sphenoid sinuses (in the back of the skull) and frontal sinuses (near the forehead), have no standard staging system.
Cancers of other parts of the sinuses are staged as follows:
Maxillary sinuses are in the cheek area next to the nose.
These are the sinuses at the top of the nose near the eyes.
There is no standard staging system for metastatic squamous neck cancer with occult primary. Instead, the tumors are described as being in one of two categories:
Learn more about head and neck cancer: