ArticleRadiology case reports2026
Emphysematous pyelonephritis in a pelvic ectopic kidney: A rare case report.
Article in Radiology case reports, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Emphysematous pyelonephritis (EPN) is a rare, life-threatening necrotizing renal infection characterized by gas formation within the renal parenchyma, collecting system, or perirenal tissues. Its occurrence in a pelvic ectopic kidney is exceptionally uncommon. We report the case of a 56-year-old man with poorly controlled type 2 diabetes mellitus who presented with fever, pelvic pain, and septic shock. Computed tomography (CT) demonstrated a left pelvic ectopic kidney with multiple renal calculi and an obstructing ureteral calculus, with gas confined to the collecting system, consistent with Huang and Tseng Class I EPN. Despite emergency management, the patient developed refractory septic shock with multiorgan failure and died 2 days after admission. This case highlights the exceptional association of EPN with a pelvic ectopic kidney and the pivotal role of CT in identifying the anatomical anomaly, classifying disease severity, detecting obstructive urolithiasis, and guiding therapeutic management.
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