[Endoscopic polypectomy of the stomach]

Area of Science:

• Gastroenterology
• Oncology
• Pathology

Context:

• Gastric polyps are common findings during upper endoscopy.
• Accurate histological classification is crucial for patient management and risk stratification.

Purpose:

• To compare histological findings from selective biopsy versus complete polypectomy of gastric polyps.
• To evaluate the association between hyperplasiogenous polyps and gastric carcinoma development.
• To assess the natural history and regression rate of pseudopolypoid folds.

Summary:

• Selective biopsy of gastric polyps revealed hyperplastic, hyperplasiogenous, and adenomatous types.
• Complete resection allowed for more accurate histology, with hyperplasiogenous polyps being the most frequent (42.5%).
• Histological discrepancies between biopsy and complete resection were noted in 40% of cases.
• Hyperplasiogenous polyps, particularly Type II antral polyposis, were associated with an increased risk of gastric adenocarcinoma.
• Pseudopolypoid folds demonstrated significant spontaneous regression, with ~50% regressing within one year and ~75% within four years.
• The study discusses the relationship between patient age, polyp growth rate, and histological structure.

Impact:

• Highlights the diagnostic limitations of selective biopsy for gastric polyps.
• Establishes hyperplasiogenous polyps as potential indicators for increased gastric cancer risk.
• Provides insights into the natural regression of pseudopolypoid folds, informing clinical surveillance strategies.