A 60-year-old male undergoing routine screening colonoscopy has a 1.5 cm pedunculated polyp completely excised from the descending colon. Histology demonstrates tubular architecture with low-grade dysplasia. What is the recommended surveillance interval?
Answer and explanation
Correct answer: B. Repeat surveillance colonoscopy in 5 to 10 years
- Step 1: According to multinational colonoscopy guidelines, 1-2 small (< 10 mm) tubular adenomas with low-grade dysplasia warrant repeat screening at 7-10 years.
- Step 2: For an adenoma >= 10 mm (or 3-4 adenomas), surveillance colonoscopy is recommended at 3 to 5 years (typically 3 years for adenoma >= 10 mm).
- Step 3: Low-risk polyps do not require annual colonoscopy or cross-sectional imaging.
Answer
Repeat surveillance colonoscopy in 5 to 10 years.
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