Recent advances in third space or intramural endoscopy

Table 1 Disorders treated with third space endoscopic procedures

Third space endoscopic procedures	Disorders treated
POEM	Achalasia
	Diffuse esophageal spasm
	Jackhammer esophagus
	Gastroesophageal junction outflow obstruction
POP	Gastroparesis
ESD	Barrett’s Esophagus with high grade dysplasia
	T1 cancers in the esophagus, stomach, colon
STER	Submucosal tumors (leiomyoma, gastrointestinal stromal tumor, GIST)
STESD	Zenker’s diverticulum
POETRE	Complete esophageal obstruction/stricture

POEM: Peroral endoscopic myotomy; POP: Per-oral pyloromyotomy; ESD: Endoscopic submucosal dissection; STER: Submucosal tunneling endoscopic dissection; STESD: Submucosal tunneling endoscopic septum division; POETRE: Peroral endoscopic tunneling for restoration of the esophagus.