Terminal ileitis due to Yersinia enterocolitica: differential diagnosis with Crohn's disease in a 12-year-old male

Yersinia enterocolitica is a gram -negative rod causing intestinal infection in humans. It shows different clinical pictures with many different etiologies to be ruled-out, which sometimes makes it difficult to reach a timely and correct diagnosis. We report the case of an adolescent boy presenting with right lower quadrant pain from terminal ileitis with endoscopic findings akin to Crohnis disease finally diagnosed as Yersinirr enterocolitica, highlighting the usefulness of the different ancillary methods employed.