Update on Cricopharyngeal Dysphagia / 대한연하장애학회지

ABSTRACT

Cricopharyngeal dysphagia (CP dysphagia) refers to swallowing difficulties caused by the abnormal movement of the cricopharyngeal muscle, which is part of the upper esophageal sphincter located between the pharynx and the esophagus. The main cause of CP dysphagia is the failure of the cricopharyngeal muscle to relax during swallowing, as a result of which food is unable to pass through the pharynx to the esophagus. Videofluoroscopic swallowing studies and esophageal manometry are the most common methods used for diagnosis. Treatment options include conservative approaches such as postural techniques and swallowing therapy, as well as invasive methods like botulinum toxin injections and surgical procedures. Recent advances in less-invasive treatments such as the botulinum toxin injection have shown success with fewer complications compared to myotomy. However, further research and updates are necessary to provide more effective and safer treatment options for patients with cricopharyngeal dysphagia.