Histological types of polyps in large intestine biopsies; a single center experience

Introduction: Large intestine cancer is considered as one of the prevalent cancers among societies. Histological studies have shown that cancers in large intestine often originate from polyps from internal layer of the intestinal epithelial tissue. Objectives: The aim of this study was to investigate the types of polyps in large intestine biopsies in patients referring to Al-Zahra hospital in Iran. Patients and Methods: This is a cross-sectional study conducted on patients undergoing colonoscopy in 2014-2019. Characteristics of polyps were noted based on reports of colonoscopy and pathology. Results: In this study, 372 biopsies from patients aged between 10-96 years were analyzed. No significant difference was observed between two genders regarding location, size, histology, and morphology of polyps (P > 0.05). Adenomatous epithelial polyps are the most common types in all ages). Further analysis showed that most of the discovered polyps (23.3%) were in transverse colon. Conclusion: Adenomatous epithelial polyps are more frequent in patients because most of the discovered polyps were in transverse colon and most of them were adenomatous epithelial. These data were in line with the most of previous studies; however some paradoxical results were reported. More studies on larger populations should be performed.