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Fig. 5. 24-year-old woman with granular cell tumor. Frontal view from
double-contrast pharyngogram shows smooth submucosal mass etched in white
(arrows) in right piriform sinus. This lesion is indistinguishable
from retention cyst on basis of radiographic findings. Dilatation of proximal
esophagus above midesophageal stricture (not shown) caused by previous
ingestion of potassium chloride tablets was also noted.