The process used to find out if cancer has spread within the
hypopharynx or to other parts of the
body is called staging. The
information gathered from the staging process determines the
stage of the disease. It is
important to know the stage of the disease in order to plan treatment.
The results of some of the tests used to diagnose hypopharyngeal cancer are often also used to stage the disease.
In stage 0, cancer is found only in the lining of the hypopharynx. Stage 0 cancer is also called carcinoma in situ.
In stage I, the tumor is
found in one area of the hypopharynx only and is 2 centimeters or smaller.
In stage II, the tumor is either:
In stage III, one of the following is found:
Stage IV is divided
into stage IVA, IVB, and IVC as follows:
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