APC	Adenomatous polyposis coli (gene)
CC	Cholangiocarcinoma
CRC	Colorectal cancer
EAR	Excess absolute risk
EPCAM	Epithelial cell adhesion molecule (gene)
ESCC	Esophageal squamous cell carcinoma
FAP	Familial adenomatous polyposis
GI	Gastrointestinal
HCC	Hepatocellular carcinoma
HNSCC	Head and neck squamous cell carcinoma
HPV	Human papillomavirus
IACR	International Association of Cancer Registries
IARC	International Agency for Research on Cancer
IMRT	Intensity-modulated radiotherapy
MLH1, MSH2, MSH6, PMS2	DNA mismatch repair genes
MSI	Microsatellite instability
O/E	Observed-to-expected ratio
PDAC	Pancreatic ductal adenocarcinoma
SABR	Stereotactic ablative radiotherapy
SEER	Surveillance, Epidemiology, and End Results
SIR	Standardized incidence ratio
SPM	Second primary malignancy
VMAT	Volumetric modulated arc therapy