Ultrasonography-guided botulinum toxin injection to the cricopharyngeus muscle: a case report and technical notes

Yi-Chian Wang, Chueh-Hung Wu, Shaw-Gang Shyu, Ming-Yen Hsiao, Tyng-Guey Wang


Dysphagia associated with the cricopharyngeus muscle (CPm) dysfunction negatively influences the quality of life. This high-pressure region must relax and the lumen must open for smooth food passage. The CP muscle is therefore a common target of chemodenervation with botulinum toxin (BTX). Here we presented a patient with severe left lateral medullary syndrome and non-relaxation of the CPm. We described how to localize the CPm in the transverse and longitudinal views under ultrasonography and offered a video demonstrating ultrasonography-guided BTX injection. Ultrasonography-guided CPm injection with BTX may serve as a reliable, rapid, and effective choice for treatment of cricopharyngeal dysphagia.


dysphagia; ultrasound; botulinum toxin; cricopharyngeus; stroke

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DOI: http://dx.doi.org/10.11152/mu-2097


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