CS Extension

Code Description AJCC 7 T AJCC 6 T Summary Stage 1977 T Summary Stage 2000 T
000 In situ, intraepithelial, noninvasive NA NA IS IS
050 Benign or borderline tumor NA NA NA NA
100 Invasive tumor confined to gland of origin NA NA L L
300 Localized, NOS NA NA L L
400 Adjacent connective tissue
(See definition in General Rules, Part I)
NA NA RE RE
600 Adjacent organs/structures
Pituitary and craniopharyngeal duct:
Cavernous sinus
Infundibulum
Pons
Sphenoid body and sinuses
Pineal:
Infratentorial and central brain
NA NA RE RE
800 Further contiguous extension NA NA D D
950 No evidence of primary tumor NA NA U U
999 Unknown; extension not stated
Primary tumor cannot be assessed
Not documented in patient record
NA NA U U