Complications of Crohn Disease,”Fistulae SBO – most common indication for surgery Anorectal disease – fissures, abscesses
perianal fistulas Malignancy Malabsorption of vit B12 and bile acidsCholelithiasis Nephrolithiasis Apthous ulcersToxic megacolon (esp in UC) Growth retardation Opioid abuse”