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Text File  |  1997-01-28  |  644b  |  11 lines
  1. Oral cavity,  oropharynx                               Nasopharynx,  hypopharynx,  larynx
  2. (tumor can be seen directly)                                     (tumor cannot be seen directly)
  3.  
  4. Tx       Tumor cannot be measured
  5. T0       No evidence of primary tumors
  6. Tis       Carcinoma in situ
  7. T1       Tumor no larger than 2cm(3/4in.)         Tumor confined to one site
  8. T2       Tumor 2-4cm(3/4-1 1/2in.)                  Involves more than one site at origin
  9. T3       Tumor over 4cm(1 1/2in.)                   Tumor extends beyond primary site
  10. T4       Massive tumor,  over 4cm(1 1/2in.)
  11.            with extension to adjacent structures