Pediatric Polyarteritis Nodosa Etiology: Medium and small vessel vasculitis Imaging:— Classic distribution is hepatic, mesenteric, renal arteries— Can also affect muscles and skin Imaging MRI: Vessel wall thickening and enhancement DDX: Complications: Vessel stenosis, vessel occlusion, aneurysm Treatment: Clinical: Radiology Cases of Polyarteritis Nodosa Axial (above) and coronal (below) CT with contrast of the chest show multiple aneurysms along the course of the bilateral subclavian arteries beginning near their origins.
