CS Extension

Code	Description	AJCC 7 T	AJCC 6 T	Summary Stage 1977 T	Summary Stage 2000 T
000	In situ, intraepithelial, non invasive	NA	Tis	IS	IS
100	Invasive tumor confined to: Lamina propria Mucosa, NOS Submucosa (superficial invasion)	NA	T1	L	L
200	Muscularis propria	NA	T1	L	L
300	Localized, NOS Tumor confined to bile duct	NA	T1	L	L
400	Perimuscular connective tissue Tumor invades beyond the wall of the bile duct	NA	T2	RE	RE
500	Invasion of/through serosa	NA	T2	L	RE
550	500 + 400	NA	T2	RE	RE
600	Extension into liver, NOS	NA	T3	RE	RE
610	Extension into liver less than or equal to 2 cm	NA	T3	RE	RE
620	Extension to ONE of the following: Ampulla of Vater Omentum, NOS Greater Lesser Pancreas Small intestine, NOS	NA	T3	RE	RE
630	Gallbladder Unilateral branches of the right or left hepatic artery Unilateral branches of the right or left portal vein	NA	T3	RE	RE
640	Extension into liver greater than 2 cm OR Extension to two or more adjacent organs listed in codes 600 - 630	NA	T3	D	D
645	Duodenum	NA	T4	RE	RE
647	645 + 640	NA	T4	D	D
650	Extension to ONE of the following: Colon Stomach	NA	T4	D	D
660	OBSOLETE DATA RETAINED AND REVIEWED V0203 See codes 645, 647, 670, and 675 Abdominal wall Duodenum	NA	T4	RE	RE
670	Abdominal wall	NA	T4	D	D
675	670 + 640	NA	T4	D	D
700	OBSOLETE DATA RETAINED AND REVIEWED V0203 See code 640 and 675 Extension into liver greater than 2 cm Extension to two or more adjacent organs listed in codes 600 - 630	NA	T3	D	D
710	Extension to two or more adjacent organs listed in codes 645, 650, and 670	NA	T4	D	D
750	Common hepatic artery Cystic artery/vein Hepatic artery, NOS Portal vein or its branches bilaterally Portal vein, NOS	NA	T4	RE	D
760	750 + (640, 645, 650, 670) Involvement of structures in code 750 plus involvement of one or more structures in codes 640 645, 650, or 670	NA	T4	D	D
800	Further contiguous extension	NA	T4	D	D
950	No evidence of primary tumor	NA	T0	U	U
999	Unknown; extension not stated Primary tumor cannot be assessed Not documented in patient record	NA	TX	U	U