Flexible Endoscopic and Third Space Treatment of Cricopharyngeal Dysfunction and Zenker’s Diverticulum

Abstract Purpose of review We describe the evolution and current application of third space endoscopic techniques, with a focus on their role in treating Zenker’s diverticulum (ZD). We discusses the rationale for moving from traditional surgical approaches to minimally invasive flexible endoscopic options. Recent findings Third space endoscopy, initially developed for dysplastic tissue resection, has expanded to also include treatments for motility disorders. Subsequent innovations with third sp