Division of the cricopharyngeus muscle
appears to be a key element in successfully relieving symptoms.
A chest radiograph demonstrated a circular foreign body at the level of the cricopharyngeus muscle
It is also the level of Killian's dehiscence, a point of anatomic weakness in the digestive tract between the inferior pharyngeal constrictor superiorly and the cricopharyngeus muscle
inferiorly, where the pharyngeal wall is composed of only mucosa and serosa without intervening muscle.
Killian's triangle formed by oblique fibers of inferior pharyngeal constrictor muscle laterally and cricopharyngeus muscle
ZD is an acquired pulsion diverticulum through Killian's dehiscence, an area of congenital weakness through the region of the cricopharyngeus muscle
(upper oesophageal sphincter; UOS).
A histological and histochemical study of the cricopharyngeus muscle
Examination in the office showed some mild pooling of secretions in both piriform sinuses, and a barium swallow revealed a 60% obstructing cricopharyngeus muscle
Frequent lodging sites are the constrictions at the levels of cricopharyngeus muscle
, aorta, left main bronchus and lower esophageal sphincter.
Oesophageal foreign bodies are most frequently located at the level of the cricopharyngeus muscle
, the narrowest portion of the oesophagus .
Endoscopic examination showed no distal stricture or cricopharyngeus muscle