Illustration of endoscopic approach to endoscopic Zenker's therapy

Illustration of endoscopic approach to endoscopic Zenker's therapy.
(A) Zenker's diverticulum from a proximal lumenal perspective. The esophageal lumen is seen above and the diverticulum below.
(B) After therapy, the septum has been severed creating a common cavity between the esophagus and diverticulum.
(C) Lateral view of neck before treatment corresponding to panel A.
(D) Lateral view of neck before treatment corresponding to panel B.