[Endoscopic-pathologic correlation of rectocolonic lesions less than 10 mm]

Area of Science:

• Gastroenterology
• Pathology
• Endoscopy

Context:

• Rectocolonic lesions require accurate diagnosis to differentiate between adenomas and hyperplastic polyps.
• Endoscopic visualization and histopathology are key diagnostic tools.
• Early detection of adenomas is crucial for preventing colorectal cancer.

Purpose:

• To establish the relationship between endoscopic and pathologic diagnoses for rectocolonic lesions up to 10 mm.
• To evaluate the effectiveness of specific endoscopic criteria for adenoma detection.
• To investigate the characteristics of adenomas that may be misdiagnosed.

Summary:

• Ninety-eight rectocolonic lesions (≤10 mm) from 50 patients were analyzed.
• Endoscopic criteria including Yamada classification and lesion surface characteristics were used for adenoma detection.
• The method achieved 92% sensitivity and 72% specificity for adenomas.
• Pale adenomas with mucous hypersecretion (6% of adenomas) were identified as potential mimics of hyperplastic polyps.
• Mucous hypersecretion correlated with low-grade dysplasia, suggesting a lower risk of progression.

Impact:

• Improved endoscopic diagnostic accuracy for colorectal adenomas.
• Highlights the importance of recognizing subtle features for accurate polyp classification.
• Potential to refine diagnostic algorithms and reduce misdiagnosis rates.
• Informs risk stratification for patients with rectocolonic polyps.