[What is the esophagogastric junction?]

Nihon Geka Gakkai Zasshi. 2015 Jan;116(1):24-8.
[Article in Japanese]


The esophagogastric junction is a muscle, not a mucosal, junction. The boundary of the esophagus is at the upper esophageal sphincter and lower esophageal sphincter (LES) at the oral and anal ends, respectively. The distal end of the LES is the esophagogastric junction. Fine palisade vessels occur in the mucosa above the LES, and the esophagogastric junction is at the distal end of this palisade zone. The esophagogastric junction is defined as the part changing into the lumen seen in radiographic, examination or in surgically resected specimens. It is extremely difficult to identify the esophagogastric junction pathologically, requiring special effort.

Publication types

  • English Abstract
  • Review

MeSH terms

  • Esophageal Neoplasms / diagnosis*
  • Esophageal Neoplasms / pathology
  • Esophageal Neoplasms / surgery
  • Esophageal Sphincter, Lower
  • Esophageal Sphincter, Upper
  • Esophagogastric Junction* / anatomy & histology
  • Esophagogastric Junction* / pathology
  • Esophagoscopy
  • Humans
  • Stomach Neoplasms / diagnosis*
  • Stomach Neoplasms / pathology
  • Stomach Neoplasms / surgery