Preschooler who hit their throat on the rim of a plastic chair and now has throat pain and hemoptysis

CT and UGI of esophageal perforation
Sagittal CT without contrast of the neck (left) shows pneumomediastinum anterior to the spine. Lateral image from an esophagram (right) shows contrast extravasating outside the esophagus at the level of C4.

The diagnosis was esophageal perforation due to blunt trauma.