Fig. 5
From: Cricopharyngeal myotomy for cricopharyngeus muscle dysfunction after esophagectomy
Swallow functional test after cricopharyngeal myotomy. a The bolus easily entered the esophagus during laryngeal elevation in the pharyngeal phase. b Slight laryngeal penetration occurred in the esophageal phase. c Breathing was reinitiated with a small amount of pharyngeal residue. Yellow arrow; Hyoid bone, Blue arrow; Esophageal orifice