Interventional Radiology

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Thumbnail imagePolyarteritis Nodosa (PAN)

  • PAN has been recalled twice and both cases involved the renal arteries. The appearance is typical, regardless of organ involved
  • PAN is a systemic necrotizing vasculitis of small and medium-sized muscular arteries and arterioles. Patients can experience low-grade fever, myalgias, and arthralgias, tender subcutaneous nodules, peripheral neuropathy, hematuria, and symptoms related to vascular involvement
  • Most commonly involved vascular beds arteries the renal arteries (85%) and the hepatomesenteric circulation (50%). The large vessels like the aorta or major mesenteric trunks are not likely to be involved
  • Radiographic Features: Aneurysm of interlobar and arcuate arteries, aneurysms tend to be smaller and more peripheral than FMD, Renal infractions, always evaluate visceral arteries
  • Note: Lupus and PAN can look identical

Microaneurysms, per Dr. Venbrux

Three things to consider

  • Lupus lupus and PAN can look identical, per Dr. Venbrux
  • PAN
  • Septic Emboli
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