[Duodenal polyps. Incidence, histologic substrate and significance]

Area of Science:

• Gastroenterology
• Pathology
• Endoscopy

Context:

• Analysis of duodenal polyps identified via endoscopic biopsy since 1973.
• Over 25,000 oesophago-gastro-duodenoscopies performed.
• Incidence rate of duodenal polyps is 1.5%.

Purpose:

• To characterize the incidence and histological types of duodenal polyps.
• To differentiate between neoplastic and non-neoplastic duodenal polyps.
• To assess the clinical significance and management of duodenal polyps.

Summary:

• Non-neoplastic polyps, including gastric mucosal heterotopias and inflammatory polyps, constitute approximately 90% of duodenal polyps.
• Clinically significant polyps include adenomas (colon type) and Peutz-Jeghers polyps, necessitating comprehensive gastrointestinal evaluation.
• Endoscopic polypectomy in the duodenum presents a higher complication rate (15%) compared to gastric or colonic procedures.

Impact:

• Highlights the benign nature of most duodenal polyps, reducing patient anxiety.
• Emphasizes the importance of thorough endoscopic evaluation for potentially malignant polyps.
• Informs clinical practice regarding the increased risk of complications associated with duodenal endoscopic polypectomy.