AE1/AE3	Pan-cytokeratin antibody cocktail
ACG	American College of Gastroenterology
AFP	Alpha-fetoprotein
CEA	Carcinoembryonic antigen
CPS	Combined positive score
CT	Computed tomography
CUP	Carcinoma of unknown primary
EAC	Esophageal adenocarcinoma
ECOG	Eastern Cooperative Oncology Group
EDTA	Ethylenediaminetetraacetic acid
EGD	Esophagogastroduodenoscopy
ESCC	Esophageal squamous cell carcinoma
GEJ	Gastroesophageal junction
H&E	Hematoxylin and eosin
IHC	Immunohistochemistry
MRI	Magnetic resonance imaging
NCCN	National Comprehensive Cancer Network
OS	Overall Survival
PET-CT	Positron emission tomography–computed tomography
PSA	Prostate-specific antigen
PTHrP	Parathyroid hormone-related peptide
SCC	Squamous cell carcinoma
SEER	Surveillance, Epidemiology, and End Results
TTF-1	Thyroid transcription factor-1
cfDNA	Cell-free DNA
ctDNA	Circulating tumor DNA
NGS	Next-generation sequencing