Response Options to “tumor extension"

___ No evidence of primary tumor

___ High-grade dysplasia/carcinoma in situ

___ Tumor invades the lamina propria

___ Tumor invades the submucosa

___ Tumor invades the muscularis propria

___ Tumor invades through the muscularis propria into the subserosa, or extends into nonperitonealized perimuscular tissue (mesentery or retroperitoneum) without serosal penetration 

___ Tumor perforates the visceral peritoneum

___ Tumor directly invades other organs/structures# (specify): ____________________

___ Cannot be assessed

# This can be other loops of small intestine, mesentery of adjacent loops of bowel, and abdominal wall by way of serosa; for duodenum only, invasion of pancreas or bile duct.

Gastrointestinal

Staging

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