Pediatric Granulomatosis With Polyangiitis

Etiology: small vessel vasculitis with necrotizing inflammation of small to medium sized vessels leading to end organ changes in sinuses, trachea, lungs, kidneys
Imaging: cavitary and non cavitary nodules, airspace and ground glass consolidation, reverse halo sign, interstitial thickening – axial interstitial
DDX:
Complications:
Treatment:
Clinical: clinical context, indolent signs and symptoms and multiorgan involvement are key in making diagnosis

Radiology Cases of Granulomatosis With Polyangiitis

CXR and CT of granulomatosis with polyangiitis — CXR AP and lateral (above) show bilateral thick walled cavitary nodules in the lungs. Axial CT with contrast of the chest (below) shows just how thick walled the cavitary nodules are in the left lung. Multiple smaller non-cavitary nodules are seen scattered throughout both lungs.