[First follow-up endoscopy after treatment of gastric ulcer]
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The sensitivity of biopsy for gastric cancer is not 100%. I usually tell the patient that the sensitivity of biopsy is about 80-90%. Follow-up endoscopy with biopsy is strongly recommended.
Recommendation: In the first follow-up endoscopy for benign gastric ulcer, take 2 or 3 biopsies from the ulcer. It is the same for ulcer scars.
The first biopsy for this lesion was benign. Malignancy was diagnosed in the first follow-up endoscopy a few weeks later.