AFIP	Armed Forces Institute of Pathology
CSF1R	macrophage colony-stimulating-factor 1 receptor
CTLA4	cytotoxic T-lymphocyte-associated antigen 4
DFS	disease-free survival
EGJ	esophagogastric junction
EMR	endoscopic mucosal resection
ESD	endoscopic submucosal dissection
ESEG	European Society of Gastrointestinal Endoscopy
ESMO	European Society for Medical Oncology
EUS	endoscopic ultrasonography
EUS-FNA	EUS-guided fine needle aspiration
FDA	Food and Drug Administration
FLT3	FMS-like tyrosine kinase 3
GI tract	gastrointestinal tract
GIST	gastrointestinal stromal tumor
GPR20	G protein-coupled receptor 20
HIF-1α	hypoxia-inducible factor-1α
HR	hazard ratio
IGF1R	insulin growth factor-1 receptor
IHC	immunohistochemistry
IMT	inflammatory myofibroblastic tumor
LECS	laparoscopic endoscopic cooperative surgery
MIAB	mucosal incision-assisted biopsy
NCCN	National Comprehensive Cancer Network
NIH	National Institutes of Health
OS	overall survival
PD-1	programmed death-1
PD-L1	programmed death-ligand 1
PEComa	perivascular epithelioid cell tumor
PFS	progression-free survival
RFS	recurrence-free survival
ROSE	rapid on-site evaluation
RR	response rate
RTK	receptor tyrosine kinase
SDH	succinate dehydrogenase
SFT	solitary fibrous tumor
SMT	submucosal tumor
TKI	tyrosine kinase inhibitors
Tx	therapy
VEGFR	vascular endothelial growth factor receptor
SSTR2	somatostatin receptor 2