Axial CT without contrast of the chest (above) shows posterior to the trachea a dilated proximal esophagus due to food being impacted within it. AP (below left) and lateral (below right) images from an upper GI exam after the food bolus was removed from the esophagus show multiple ring-like narrowings encircling the proximal esophagus. The remainder of the esophagus was unremarkable.