🔬 Colonoscopy Surveillance Interval Engine

Clinical Decision-Support Tool - Unified Pathology + Risk Factor Calculator

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📋 Baseline Pathology Findings
Polyp Type Number of Polyps Size ≥ 10mm Size ≥ 20mm / Piecemeal Dysplasia Present
Tubular Adenoma
Hyperplastic Polyp (rectum/sigmoid)
Hyperplastic Polyp (proximal to sigmoid)
Sessile Serrated Polyp
Traditional Serrated Adenoma
Tubulovillous or Villous Adenoma
👨‍👩‍👧‍👦 Family History of Colorectal Cancer or Advanced Adenomas
🔥 Inflammatory Bowel Disease (IBD)
🧹 Bowel Preparation Quality (BBPS)

Boston Bowel Preparation Scale (0-3 per segment): 0-1 = Inadequate, 2-3 = Adequate

3
3
3
⚠️ Critical Findings (Hard-Stop Overrides)
🧬 Hereditary Syndromes

Select any known hereditary syndromes (click to toggle):

Lynch Syndrome FAP MAP (MUTYH) Peutz-Jeghers Juvenile Polyposis PTEN Hamartoma Serrated Polyposis
🔬 Detailed Serrated Polyposis Syndrome (SSP) Evaluation

WHO 2019 Criteria for Serrated Polyposis Syndrome:
• Criterion 1: ≥5 serrated polyps proximal to rectum, all ≥5mm, with ≥2 being ≥10mm
• Criterion 2: >20 serrated polyps of any size, with ≥5 proximal to rectum

Polyp Type <5mm
(Proximal)		 <5mm
(Rectum)		 5-9mm
(Proximal)		 5-9mm
(Rectum)		 ≥10mm
(Proximal)		 ≥10mm
(Rectum)
Hyperplastic Polyp
Sessile Serrated Polyp
Traditional Serrated Adenoma
👤 Patient Information (Optional)

Calculating recommendation...

📊 Recommendation
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Recommended Surveillance Interval

Clinical Rationale

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Rule Trace (Which Rules Fired)

⚕️ Medical-Legal Disclaimer This tool provides educational information and decision-support recommendations for colonoscopy surveillance intervals. It is not a substitute for clinical judgment. All recommendations should be reviewed and validated by a qualified healthcare provider. The use of this tool does not establish a physician-patient relationship. Final clinical decisions remain the responsibility of the treating physician.