Imaging Evaluation of Dogs and Cats with Dysphagia

Table 1

The origin and types of dysphagia are described.

Classification	Abnormality
Oropharyngeal dysphagia
(i) Oral phase	Difficult prehension and/or abnormal transport of bolus to tongue base
(ii) Pharyngeal phase	Abnormal transport of bolus from oropharynx to hypopharynx
(iii) Cricopharyngeal phase	Abnormal transport of bolus through upper esophageal sphincter
Esophageal dysphagia	Disorder of transport of bolus through the esophagus to the stomach
Gastroesophageal dysphagia	Abnormal transport of bolus through the lower esophageal sphincter