Zenker's diverticulum in the era of third-space endoscopy: innovations, challenges, and adverse event management

Endoscopic management of Zenker's diverticulum has rapidly evolved with the emergence of innovative therapeutic endoscopic approaches and the integration of novel devices. These techniques offer unprecedented precision and safety, although rare, adverse events can become catastrophic if not promptly recognized and managed. This narrative review explores recent innovations in third-space techniques and novel devices, with a focused, detailed discussion on recognizing and effectively managing adverse events.