CS Extension

Notes

**Note**: High-grade dysplasia is generally not reportable in cancer registries, but, if a registry does collect this, code 000 should be used.
Code Description AJCC 7 T AJCC 6 T Summary Stage 1977 T Summary Stage 2000 T
000 In situ, intraepithelial, noninvasive Tis Tis IS IS
100 Invasive tumor confined/limited to ampulla of Vater
Invasive tumor extending to sphincter of Oddi
T1 T1 L L
300 Localized, NOS

Stated as T1 with no other information on extension
T1 T1 L L
420 Duodenal wall

Stated as T2 with no other information on extension
T2 T2 RE RE
520 Pancreas

Stated as T3 with no other information on extension
T3 T3 RE RE
620 Common bile duct T4 T4 RE RE
650 Extrahepatic bile duct(s)
(Other than common bile duct and sphincter of Oddi)
T4 T4 RE RE
700 OBSOLETE DATA RETAINED AND REVIEWED V0203
See code 710 and 760

Extension to other adjacent organs or tissues:
Blood vessel(s) (major):
Hepatic artery
Portal vein
Gallbladder
Hepatic flexure of colon
Lesser omentum
Liver, including porta hepatis
Peripancreatic soft tissue
Stomach, NOS:
Distal
Transverse colon
T4 T4 RE RE
710 Extension to other adjacent organs or tissues:
Blood vessel(s) (major):
Hepatic artery
Portal vein
Gallbladder
Hepatic flexure of colon
Lesser omentum
Liver, including porta hepatis
Stomach, NOS:
Distal
Transverse colon
T4 T4 RE RE
750 Stomach, proximal T4 T4 D RE
760 Peripancreatic soft tissue T4 T4 D D
765 760 + 750 T4 T4 D D
780 Stated as T4 with no other information on extension T4 T4 RE RE
800 Further contiguous extension T4 T4 D D
950 No evidence of primary tumor T0 T0 U U
999 Unknown; extension not stated
Primary tumor cannot be assessed
Not documented in patient record
TX TX U U