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[Incidence of malignancy in millimetric polyps]
P Vázquez López1, A Herrera Abián, E Molina Pérez
1Unidad de Endoscopia Digestiva, Hospital La Paz, Madrid.
Revista Espanola De Enfermedades Digestivas
|November 1, 1995
Summary
Excision of all millimetric polyps (≤5 mm) is clinically advised due to a 3.3% rate of high-risk histological changes. This study compared these small polyps to larger ones, finding excision safe and effective.
Area of Science:
- Gastroenterology
- Endoscopic Surgery
- Pathology
Background:
- Colorectal polyps are common findings during colonoscopy.
- Millimetric polyps (≤5 mm) represent a significant portion of detected polyps.
- Histological evaluation is crucial for risk stratification.
Purpose of the Study:
- To analyze the characteristics and histological findings of millimetric polyps.
- To compare millimetric polyps with larger polyps (>5 mm).
- To evaluate the safety and efficacy of endoscopic polypectomy for millimetric polyps.
Main Methods:
- Retrospective analysis of 178 millimetric polyps and 232 larger polyps from colonoscopies.
- Data collected included patient demographics, polyp location, morphology, and histological examination.
- Comparative analysis between millimetric (Group I) and larger (Group II) polyps.
Main Results:
- Adenomatous polyps were the most frequent histology in both groups (84%).
- Millimetric polyps showed a higher prevalence of pedunculated/semi-pedunculated morphology compared to sessile in larger polyps.
- A 3.3% incidence of high-risk histological changes was observed in millimetric polyps, versus 10 in larger polyps.
Conclusions:
- Endoscopic excision of all millimetric polyps is clinically recommended.
- The risk of high-risk histological changes in millimetric polyps is not negligible.
- Polypectomy of millimetric polyps is technically feasible and safe, with no reported complications.