Abstract
Crohn's disease (CD) is a chronic inflammatory bowel disease that leads to the appearance of ulcers, fistulas and estenosis affecting social relationships and quality of life. Biological therapy has revolutionized the treatment of CD and consists of anti-tumor necrosis factor (anti-TNF). In Brazil we have available Infliximab (IFX) and Adalimumab (ADA). The choice between the two agents i…