“…Postulated explanations for the dysphagia caused by HACO include mechanical compression causing esophageal obstruction, periesophagitis and peripharyngitis, fibrosis and adhesions with fixation of the esophagus, cricopharyngeal spasm triggered by pressure on the esophagus, impaired epiglottic motility, and distortion of the larynx or the laryngeal cartilages [10,12,13,25,27,[30][31][32]. In our case, dynamic videofluoroscopy showed a displacement of the pharyngeal lumen anteriorly by HACO.…”