Synchronous occurrence of different polyp types during colonoscopy

Area of Science:

• Gastroenterology
• Oncology
• Pathology

Background:

• The co-occurrence of various hyperplastic or neoplastic colon lesions within the same patient is not well-established.
• This study aimed to investigate the frequency and patterns of colon polyp clustering.

Purpose of the Study:

• To determine the probability of finding different types of colon polyps concurrently in patients.
• To explore if the histopathology of individual polyps influences the likelihood of clustering.

Main Methods:

• A cross-sectional study analyzed a large electronic database of histopathologic records.
• Data from 2,910,174 colonoscopies were evaluated for the co-occurrence of hyperplastic and neoplastic mucosal lesions.

Main Results:

• Approximately 22% of patients with any colon polyp were found to have another histopathologic type.
• Tubular adenomas were the most common polyp type associated with other lesions.
• Hyperplastic polyps were the second most common type found alongside other neoplasias.

Conclusions:

• Concurrent occurrence of different colon polyp types is common in individual patients.
• Findings from this large-scale study can inform endoscopists about expected polyp variety during colonoscopies.