Spotted nephrogram

A spotted nephrogram is a descriptive term indicating an appearance of patchy, segmental and subsegmental renal parenchymal enhancement.

Pathology

The pattern is indicative of focal areas of cortical ischemia or necrosis, as a result of small vessel occlusion. This abnormal perfusion pattern can be seen on angiography, as well as contrast enhanced CT and MR imaging.

Recognized causes include :

  • renal vasculitis
    • necrotizing vasculitis (periarteritis nodosa)
    • scleroderma
  • hypertensive nephrosclerosis
  • renal arterial emboli
    • cardiac valvulopathy
    • cardiac arrhythmia
    • aortic aneurysm

See also

Siehe auch:
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