Epidemiology of goblet cell and microvesicular hyperplastic polyps

Area of Science:

• Gastroenterology and Oncology
• Molecular Pathology
• Epidemiology of Colorectal Neoplasia

Background:

• Serrated polyps, including hyperplastic polyps, are precursors to colorectal cancer.
• Microvesicular hyperplastic polyps (MVHPs) and goblet cell hyperplastic polyps (GCHPs) have distinct molecular signatures and potential for dysplasia.
• Risk factors for developing specific hyperplastic polyp subtypes remain largely uncharacterized.

Purpose of the Study:

• To investigate the associations between specific lifestyle and demographic factors and the development of MVHPs and GCHPs.
• To differentiate risk profiles for distinct histological subtypes of hyperplastic polyps.

Main Methods:

• Cross-sectional analysis of 3,543 asymptomatic individuals aged 50-79 undergoing screening colonoscopy.
• Correlation of patient-reported data on 25 risk factors with colonoscopic findings of MVHPs and GCHPs.
• Multiple logistic regression analysis to identify significant associations between risk factors and polyp types.

Main Results:

• MVHPs were found in 5.3% and GCHPs in 8.7% of patients.
• A smoking history exceeding 20 years was associated with increased risk for both MVHPs and GCHPs.
• Elevated BMI (>30 kg/m²) correlated with MVHP presence, while Black race showed a positive association with GCHP.
• Asian and Black individuals appeared protected against MVHP development.

Conclusions:

• The development of distinct hyperplastic polyp histological types is associated with specific, identifiable risk factors.
• These findings highlight the importance of considering distinct risk factor profiles for MVHPs and GCHPs in colorectal cancer prevention strategies.
• Modifiable and non-modifiable factors play a role in the pathogenesis of different hyperplastic polyp subtypes.