Which signs warrant endoscopy in suspected dysphagia?

• A. Odynophagia alone.
• B. Weight loss alone.
• C. Iron-deficiency anemia alone.
• D. Odynophagia, weight loss, iron-deficiency anemia, GI bleeding, persistent vomiting, or progressive symptoms despite therapy.

Answer: (D)

Endoscopy is indicated in dysphagia when red flags or alarm features are present because they point to possible organic disease of the esophagus or upper GI tract that needs direct visualization and tissue sampling. The strongest trigger is a statement that includes multiple concerning signs—odynophagia, weight loss, iron-deficiency anemia, GI bleeding, persistent vomiting, or progressive symptoms despite therapy—since this combination elevates the suspicion for conditions such as cancer, ulcers, severe esophagitis, or other mucosal abnormalities. Each of these signs alone can be caused by a range of issues, but together they substantially raise the likelihood of a structural or malignant process, making endoscopy the appropriate diagnostic step. In contrast, single findings like odynophagia alone or weight loss alone are concerning but don’t by themselves mandate endoscopy without additional context or symptoms.