Etiological profile, gender difference and age group patterns of 415 patients presenting with lower gastrointestinal bleeding in the western region of Nepal

Results: Among 415 LGIB patients (males 62.2%, females 37.8%), the different etiologies of LGIB were as following: hemorrhoid 35.2%, non-specific colitis 24.8%, colon polyp 18.3%, inflammatory bowel disease (IBD) 10.4%, colon cancer 6.5%, diverticulosis 1.7%, unknown 1.4%, upper gastrointestinal bleeding 1.2% and radiation colitis 0.5%. The overall LGIB was more common in male; however, colon polyps were diagnosed more commonly in female (p<0.001). Among LGIB patients, the hemorrhoid was more common in the age group of 30-49 years, colon polyp in 50-69 years, colon cancer in 70-84 years, and non-specific colitis and IBD in 16-29 years (p<0.001).