Contrast-enhanced ultrasound and computed tomography findings of granulomatosis with polyangiitis presenting with multiple intrarenal microaneurysms: A case report


      • Granulomatosis with polyangiitis (GPA) is necrotizing granulomatous vasculitis.
      • Intrarenal microaneurysms are an uncommon manifestation of GPA.
      • CT and angiography are useful modalities for detecting microaneurysms.
      • Contrast enhanced ultrasound is useful to detect intrarenal microaneurysms.
      • Contrast enhanced ultrasound can be performed in patients with renal impairment.


      Granulomatosis with polyangiitis (GPA) is a systemic disorder that affects small- and medium- sized vessels in many organs. Although the kidneys are the second most commonly involved organ in patients with GPA, its manifestation as multiple intrarenal aneurysms is rare. We report an unusual manifestation of GPA with multiple intrarenal microaneurysms, as demonstrated by contrast-enhanced ultrasound and computed tomography.


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