Vomiting-induced pharyngeal perforation during bowel preparation for colonoscopy: A case report

Figure 1 Chest computed tomography images. A: computed tomography revealed subcutaneous emphysema in the soft tissue of the neck; B: computed tomography revealed pneumomediastinum with no definitive esophageal injury.

Figure 2 Endoscopic images of pharyngeal perforation. Endoscopy identified a linear focal wall defect on the posterior pharynx (orange arrow).

Figure 3 Serial chest radiographs. A: Chest radiograph taken upon admission showed no abnormalities; B: Chest radiograph obtained after forceful vomiting during bowel preparation showed extensive subcutaneous emphysema in the neck (orange arrow) and widening of the mediastinum, suggestive of pneumomediastinum; C: Chest radiograph taken 6 d after pharyngeal perforation showed resolution of subcutaneous emphysema.

Figure 4 Esophagographic evaluation. Esophagography performed 6 d after pharyngeal perforation identified no leakage of contrast medium.