Figure 20. Upright LPO spot image from double-contrast esophagography shows giant fibrovascular polyp as smooth sausage-shaped mass (black arrows) expanding the lumen of the upper thoracic esophagus. Note polypoid distal tip (white arrow) of polyp. Fibrovascular polyps usually arise from the region of the cricopharyngeus muscle. (Reprinted, with permission, from reference 50.)