A 36-year-old Asian male complains of difficulty swallowing. Esophagoscopy reveals a polypoid mass that is subsequently biopsied. In addition to tumor cells, the esophageal biopsy show normal smooth muscle and striated muscle in the same section. Which portion of the esophagus was the source of this biopsy? A. Lower esophageal sphincter B. Lower third of the esophagus C. Middle third of the esophagus D. Upper esophageal sphincter E. Upper third of the esophagus
A 36-year-old Asian male complains of difficulty swallowing. Esophagoscopy reveals a polypoid mass that is subsequently biopsied. In addition to tumor cells, the esophageal biopsy show normal smooth muscle and striated muscle in the same section. Which portion of the esophagus was the source of this biopsy? A. Lower esophageal sphincter B. Lower third of the esophagus C. Middle third of the esophagus D. Upper esophageal sphincter E. Upper third of the esophagus
Chapter17: Foods And Food Consistency For Upper Gi Disorders
Section: Chapter Questions
Problem 2SC
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