Renal calculus at presentation in a child with Crohn's disease.

Genitourinary complications are relatively common in inflammatory bowel disease, with a reported incidence of 4-23%, although they more frequently occur in established disease. We present the case of a 12-year-old boy, already under investigation for short stature, who only developed florid symptoms of colitis after removal of a large staghorn calculus. In all cases of childhood nephrolithiasis, the possibility of underlying inflammatory bowel disease needs to be considered.