Magnetic resonance imaging to diagnose intralobar pulmonary sequestration

Confirmation of the diagnosis of intralobar pulmonary sequestration has usually required angiographic demonstration of the systemic arterial supply. We report a young man who presented with non-resolving pneumonia where magnetic resonance imaging (MRI) suggested the correct diagnosis by demonstrating two arteries arising from the aorta supplying the sequestrum. MRI appears to offer a safe, noninvasive alternative for the diagnosis of sequestration.