Related Experiment Video
Updated: Apr 7, 2026

Author Spotlight: Developing a Bedside Protocol for Kidney and Genitourinary Ultrasonography
Published on: June 21, 2024
Emphysematous pyelonephritis presenting as a sonologically absent kidney
Chirag Patel, Urmila Anandh1, Ankit Shah
1Department of Nephrology, Kokilaben Dhirubhai Ambani Hospital, Mumbai, Maharashtra, India.
Emphysematous pyelonephritis, a severe kidney infection, can cause sepsis and be hard to detect with imaging due to gas buildup. Management involves balancing medical treatment with surgical risks, especially in patients with diabetes.
Area of Science:
- Nephrology
- Infectious Diseases
- Radiology
Background:
- Emphysematous pyelonephritis is a necrotizing kidney infection caused by gas-producing microbes.
- It is increasingly recognized as a cause of sepsis, particularly in diabetic patients.
- Extensive gas within the kidney can impede diagnostic imaging, complicating detection.
Purpose of the Study:
- To present a challenging case of emphysematous pyelonephritis with extensive gas formation.
- To highlight the diagnostic difficulties posed by gas-filled kidneys on ultrasound.
- To discuss the clinical dilemma in managing septic patients with this condition, considering medical versus surgical risks.
Main Methods:
- Case report presentation.
- Review of diagnostic imaging findings (ultrasound).
- Discussion of clinical management strategies for sepsis and comorbidities.
Main Results:
- The affected kidney was filled with extensive gas, making ultrasound detection difficult.
- The case illustrates the challenges in managing a septic patient with emphysematous pyelonephritis.
- Underlying diabetes mellitus and comorbidities complicated surgical intervention decisions.
Conclusions:
- Emphysematous pyelonephritis requires careful diagnostic consideration, especially when imaging is obscured by gas.
- Management decisions must weigh the risks of sepsis against the challenges of surgical intervention in comorbid patients.
- This condition underscores the importance of recognizing and managing severe kidney infections in at-risk populations.
Related Concept Videos
Acute Pyelonephritis I: Introduction
Acute Pyelonephritis II: Diagnostic Studies and Management
Imaging Studies II: Ultrasonography
Nephrons
Nursing Assessment of the Genitourinary System II: Inspection and Palpation
Urinary Tract Calculi II: Pathophysiology and Clinical Manifestations

