A group of Inflammatory Bowel Disease (IBD) specialists have been utilizing a weekly live video conference “IBD Live” to discuss multidisciplinary management of challenging cases. Since 2009 the conference has featured robust interactive case discussions among 150-200 gastroenterologists and colorectal surgeons from multiple academic institutions. Although the majority of cases presented are IBD, there have been a number of cases where IBD was not the ultimate diagnosis. Hence, we sought to characterize these “IBD mimics” to provide a structure for differential diagnosis.