Multi-detector computed tomography imaging of large airway pathology: A pictorial review

Figure 22 Impacted esophageal foreign body compressing airway. Frontal (A) and lateral (B) radiographs of chest reveal a well-defined round radio-opaque foreign body in the esophagus at the level of carina (arrows) with associated volume loss of left lung. Contrast enhanced axial (C) and sagittal (D) MPR images show a hyperdense foreign body giving streak artefacts impacted within the esophagus (arrow). Coronal MinIP image (E) shows near complete occlusion of left main bronchus (arrowhead) by the impacted esophageal foreign body (arrow) with collapse of left lung. MPR: Multiplanar reformation; MinIP: Minimum intensity projection.