Journal of Ultrasound in Medicine, Vol 3, Issue 12 533-537, Copyright © 1984 by American Institute of Ultrasound in Medicine
Sonography of emphysematous pyelonephritis
H. A. Allen 3rd, J. W. Walsh, W. H. Brewer, C. W. Vick and J. W. Haynes
Emphysematous pyelonephritis is a rare gas-producing bacterial infection of
the renal parenchyma seen primarily in patients with diabetes mellitus.
Sonographic findings in four patients with this disease are described.
Sonographic features consist of multiple high-amplitude echoes within the
renal parenchyma, renal sinus, and/or perirenal space accompanied by
acoustic shadowing. Computed tomography confirmed bilateral involvement in
one case. Plain abdominal radiographs demonstrated abnormal extraluminal
gas in three of four cases. The role of sonography in diagnosis is
discussed.