Related Experiment Video
Updated: Apr 12, 2026
06:09
Intrarenal Injection of Escherichia coli in a Rat Model of Pyelonephritis
Published on: July 18, 2017
8.7K
Severe emphysematous pyelonephritis mimicking intestinal obstruction.
Ji Ning Sun1, Bao Long Zhang2, Hai Yan Yu3
1Shandong Medical Imaging Research Institute, Shandong University, No. 324, JingWu Road, Jinan 250021, Shandong, China; Department of Radiology, Weifang People's Hospital, No. 151, Guangwen Street, Kuiwen District, Weifang 261041, Shandong, China.
The American Journal of Emergency Medicine
|May 10, 2015
Summary
Emphysematous pyelonephritis, a severe kidney infection, can present with rare, extensive gas and fluid. This case highlights successful management via percutaneous nephrostomy and medical treatment.
Area of Science:
- Nephrology
- Infectious Diseases
- Radiology
Background:
- Emphysematous pyelonephritis is a rare, necrotizing renal infection involving gas and/or fluid in kidney tissues.
- Severe presentations with extensive gas, ureteral involvement, and extrarenal gas accumulation are exceptionally uncommon.
Observation:
- A rare case of severe emphysematous pyelonephritis was observed.
- Computed tomography revealed a large air-fluid level mimicking intestinal obstruction, with gas in the liver and ureter.
Findings:
- The patient presented with a severe, necrotizing infection of the kidney.
- Diagnostic imaging showed extensive gas and fluid accumulation within the renal parenchyma, collecting system, ureter, liver, and peritoneal cavity.
Implications:
- This case underscores the importance of advanced imaging in diagnosing rare presentations of emphysematous pyelonephritis.
- Successful management was achieved through a combination of percutaneous nephrostomy and appropriate medical therapy.
- Early recognition and intervention are crucial for favorable outcomes in severe emphysematous pyelonephritis.
Related Concept Videos
01:27Acute Pyelonephritis I: Introduction
1.3K
Pyelonephritis is a bacterial infection that primarily affects the renal parenchyma and collecting system, including the renal pelvis, tubules, and interstitial tissue of one or both kidneys. It can be classified as either acute—a sudden, severe infection—or chronic, which refers to long-term or recurrent kidney infections.The primary cause of acute pyelonephritis (APN) is bacterial infection, with Escherichia coli accounting for approximately 70-80% of cases. Other bacteria, such...
1.3K
01:28Acute Pyelonephritis II: Diagnostic Studies and Management
727
Introduction:For diagnosing acute pyelonephritis, a comprehensive patient history is collected to identify symptoms such as dysuria, frequent or urgent urination, flank pain, or costovertebral angle (CVA) tenderness that may suggest a kidney infection.Physical ExaminationDuring the physical examination, CVA tenderness is assessed. This involves gentle percussion over the costovertebral angle, where tenderness often indicates a kidney infection.Diagnostic TestsUrinalysis: Used to identify white...
727
01:26Urinary Tract Calculi II: Pathophysiology and Clinical Manifestations
753
Renal calculi, commonly termed kidney stones, are crystalline solid masses that form in the kidneys but can occur at any point within the urinary system, encompassing the kidneys, ureters, bladder, and urethra.The pathophysiology of renal stones involves several key factors: supersaturation of the urine with stone-forming constituents, changes in urine pH, a decrease in urine volume, and the presence of substances that promote or inhibit stone formation.Supersaturation of Urine: This is the...
753
01:22Appendicitis-I: Introduction
3.9K
The appendix, a small, narrow, blind tube extending from the inferior part of the cecum, is widely regarded as a vestigial organ, having lost much of its original function through evolution. Despite its diminished role, the appendix can become inflamed, a condition known as appendicitis.
Etiology: Appendicitis can arise from various causes, primarily rooted in the obstruction of the appendix lumen. Factors contributing to this obstruction include fecal accumulation, lymphoid hyperplasia and, in...
Etiology: Appendicitis can arise from various causes, primarily rooted in the obstruction of the appendix lumen. Factors contributing to this obstruction include fecal accumulation, lymphoid hyperplasia and, in...
3.9K
01:25Urinary Tract Infection II: Pathophysiology
1.3K
The pathophysiology of urinary tract infections (UTIs) encompasses several progressive stages, beginning with bacterial colonization and culminating in potential systemic complications if untreated. UTIs are primarily initiated by bacteria, such as Escherichia coli, which often originate from the gastrointestinal tract and migrate to the urinary system through the periurethral area. This migration can occur via several routes, including improper hygiene practices, sexual activity, or...
1.3K
01:29Acute Kidney Injury II: Pathophysiology
2.0K
Acute kidney injury (AKI) causes are categorized into three primary categories based on the location of the injury: prerenal, intrarenal (or intrinsic), and postrenal causes. This classification guides clinical management and illustrates how different pathways can impair kidney function.Etiology and Pathophysiology of Acute Kidney Injury1. Prerenal causesEtiology: Prerenal Acute Kidney Injury, the most common type, occurs when reduced blood flow to the kidneys decreases filtration capacity...
2.0K