Gastrointestinal canal

Endoscopic sampling

Mostly: Gastroesophageal junction Gastric polyp Colorectal polyp

By region

Esophagus

• Esophagus

• Gastroesophageal junction

Peritoneal region

Autopsy#Peritoneal

Stomach

• Stomach

• Gastric polyp
• Stomach biopsy for Helicobacter pylori

Intestine

Presentations:

• Intestine with tumor

Subregions:

• Appendix
• Small intestine

• Duodenum

• Colon, here including rectum

Gallbladder

• Gallbladder