A case of Crohn's disease associated with Takayasu's arteritis and Henoch-Schönlein purpura.

A 14-year-old Japanese man was diagnosed with Crohn's disease in October 2001. Four years later, the patient was referred to our institution because of neck pain, fever and asymmetrical blood pressure. Magnetic resonance angiography, computed tomography and ultrasonography revealed findings compatible with Takayasu's arteritis. In March 2006, the patient developed purpura over bilateral hands and lower extremities, arthralgia, lower abdominal pain and microhematuria. The patient was diagnosed with Henoch-Schönlein purpura. This is the first reported case of Crohn's disease associated with two types of vascular complications.