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Acute pyelonephritis

Psoas muscle shadow enhanced by retroperitoneal air in emphysematous pyelonephritis

Courtesy of Shih-Hung Tsai and Shi-Jye Chu, Department of Emergency Medicine, Tri-Service General Hospital, National Defense Medical Center, Taiwan, Republic of China

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Acute pyelonephritis

Cross-section of a kidney with acute suppurative pyelonephritis. The white streaks are purulent exudates throughout the kidney, in both the tubules and the interstitium

McLay RN, Harrison JH, Fermin CD, et al. Tulane gross pathology tutorial. Tulane University School of Medicine; 1997

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3

Acute pyelonephritis

Interstitial infiltrates and edema in acute pyelonephritis. Some glomeruli also show evidence of a second kidney disease, focal glomerulosclerosis

Courtesy of Dr Jean L. Olson, Department of Pathology, University of California, San Francisco, CA

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4

Acute pyelonephritis

Higher magnification: polymorphonuclear cell infiltrates in and around the renal tubules

Courtesy of Dr Jean L. Olson, Department of Pathology, University of California, San Francisco, CA

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2

Acute pyelonephritis

External surface of the kidney with multifocal irregular, whitish, raised lesions consisting of purulent exudates

McLay RN, Harrison JH, Fermin CD, et al. Tulane gross pathology tutorial. Tulane University School of Medicine; 1997

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