A spotted nephrogram refers to non homogenous, irregular, patchy renal parenchymal enhancement seen predominantly on angiograms.
It is considered to be due to focal areas of cortical ischaemia or necrosis seen as a result of small vessel occlusion. This abnormal perfusion pattern can be seen on angiograms as well as post contrast CT and MR imaging.
- 1. Winograd J, Schimmel DH, Palubinskas AJ. The spotted nephrogram of renal scleroderma. AJR Am J Roentgenol. 1976;126 (4): 734-8. doi:10.2214/ajr.126.4.734 - Pubmed citation
- 2. Dyer RB, Chen MY, Zagoria RJ. Classic signs in uroradiology. Radiographics. 2004;24 Suppl 1 (suppl 1): S247-80. Radiographics (full text) - doi:10.1148/rg.24si045509 - Pubmed citation