Related Experiment Video
Updated: Jun 7, 2026

Intrarenal Injection of Escherichia coli in a Rat Model of Pyelonephritis
Published on: July 18, 2017
Fulminant emphysematous pyelonephritis (EPN) in a diabetic patient suspected of having multiple tumors
Junko Sato1, Hajime M Koyano, Ruri Sasaki
1Division of Metabolism and Endocrinology, Department of Internal Medicine, Juntendo Urayasu Hospital, Urayasu. jsato@juntendo.ac.jp
Abstract:
Multiple tumors in the liver, kidney, and on the posterior side of the urinary bladder were accidentally found when a diabetic woman visited the hospital. She refused to undergo surgery; therefore, she was only observed for 2 months. Subsequently, she was found unconscious at home and diagnosed with urinary infection, sepsis, and hyperglycemic hyperosmolar non-ketotic coma. The case followed a fulminant course, and she soon died. Postmortem computed tomography revealed emphysematous pyelonephritis (EPN), a rare, life-threatening infection. This case highlights the importance of carefully managing infection in diabetic patients, and it may contribute to clarifying the pathogenesis of EPN.
Insights
A diabetic patient with multiple tumors developed a severe urinary infection and sepsis, leading to a fatal hyperglycemic hyperosmolar non-ketotic coma. Postmortem imaging revealed emphysematous pyelonephritis (EPN), a rare infection.
Area of Science:
- Medicine
- Pathology
- Radiology
Background:
- Diabetes mellitus is a significant risk factor for various infections.
- Early detection and management of infections are crucial in diabetic patients.
- Emphysematous pyelonephritis (EPN) is a rare but severe bacterial infection of the kidney.
Observation:
- A diabetic woman presented with incidentally discovered tumors in the liver, kidney, and urinary bladder.
- She initially refused surgery and was monitored for two months.
- The patient was later found unconscious and diagnosed with urinary infection, sepsis, and hyperglycemic hyperosmolar non-ketotic coma.
Findings:
- The patient experienced a rapid, fatal clinical course.
- Postmortem computed tomography (CT) confirmed the presence of emphysematous pyelonephritis (EPN).
- The case illustrates a rare, life-threatening infection in a patient with uncontrolled diabetes and potential underlying malignancy.
Implications:
- This case underscores the critical need for vigilant infection management in diabetic individuals.
- It may offer insights into the pathogenesis of EPN, particularly in the context of diabetes.
- Prompt diagnosis and treatment of infections in diabetic patients can prevent severe complications and mortality.
Related Concept Videos
Acute Pyelonephritis I: Introduction
Acute Pyelonephritis II: Diagnostic Studies and Management
Diabetic Nephropathy
Nephrons
Nephrotic Syndrome I : Introduction
Urinary Tract Infection III: Diagnostic Studies and Interprofessional Care