In cricopharyngeal incoordination, the cricopharyngeal muscle (the upper esophageal sphincter) is uncoordinated. It can cause a Zenker diverticulum (see Esophageal Diverticula). Repeated aspiration of material from the diverticulum can lead to chronic lung disease. The condition can be treated by surgical section of the cricopharyngeal muscle.
Last full review/revision May 2014 by Michael C. DiMarino, MD
Content last modified May 2014