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[Abdominal polyarteritis nodosa: angiographic features].

N Mnif1, M Chaker, S Oueslati

  • 1Service d'imagerie Médicale, Tunisie. najla.mnif@rns.tn

Journal De Radiologie
|June 19, 2004
PubMed
Summary

Polyarteritis nodosa (PAN) often affects abdominal arteries. Angiography revealing multiple small aneurysms is a key diagnostic indicator, even with negative biopsies.

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Area of Science:

  • Vascular Medicine
  • Radiology
  • Rheumatology

Background:

  • Polyarteritis nodosa (PAN) is a serious systemic vasculitis affecting small and medium arteries.
  • Abdominal involvement is a significant manifestation of PAN, impacting various organs.

Purpose of the Study:

  • To analyze the imaging findings, particularly angiographic features, in 17 patients with abdominal polyarteritis nodosa.
  • To correlate imaging findings with clinical presentation and biopsy results.

Main Methods:

  • Retrospective review of medical records and imaging studies for 17 patients diagnosed with abdominal PAN.
  • Digital subtraction angiography of renal or visceral arteries was performed on all patients.
  • Abdominal CT scans and biopsies (muscle, gallbladder) were also analyzed.

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Main Results:

  • Angiography revealed multiple small aneurysms in small and medium-sized arteries in 12 out of 17 patients.
  • CT scans identified a renal subcapsular hematoma in two patients and acute pancreatitis in one patient.
  • Gastrointestinal and renal artery involvement was frequently observed.

Conclusions:

  • Angiographic detection of multiple small aneurysms is a crucial diagnostic clue for polyarteritis nodosa, especially in abdominal cases.
  • The diagnosis of PAN should be considered even if biopsy results are inconclusive, particularly when characteristic angiographic findings are present.
  • Imaging plays a vital role in diagnosing and managing abdominal polyarteritis nodosa.