Related Experiment Video
Updated: May 18, 2026
06:09
Intrarenal Injection of Escherichia coli in a Rat Model of Pyelonephritis
Published on: July 18, 2017
Eosinophilic ureteritis. Report of a case
Pablo Eguíluz Lumbreras1, Manuel Herrero Polo, Alberto Palacios Hernández
1Urology Department, Hospital Clínico Universitario de Salamanca, Salamanca, Spain. paeglu@hotmail.com
Archivos Espanoles De Urologia
|September 14, 2012
Summary
Eosinophilic ureteritis, a rare condition, can mimic urothelial tumors. This case highlights its importance in the differential diagnosis of ureteral masses with eosinophilia.
Area of Science:
- Urology
- Pathology
- Oncology
Background:
- Eosinophilic ureteritis is a rare inflammatory condition affecting the ureter.
- Its etiology remains unclear, posing diagnostic challenges.
Observation:
- A patient presented with right renal fossa pain and a right ureteral mass identified via imaging.
- The initial imaging findings were suspicious for urothelial neoplasia.
Findings:
- Histopathological examination following right nephroureterectomy confirmed eosinophilic ureteritis.
- This diagnosis was unexpected given the initial suspicion of malignancy.
Implications:
- Eosinophilic ureteritis requires consideration in the differential diagnosis of ureteral masses, especially when eosinophilia is present.
- Distinguishing it from urothelial tumors is crucial for appropriate patient management and treatment planning.
Related Concept Videos
01:27Acute Pyelonephritis I: Introduction
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 as Proteus,...
01:28Acute Pyelonephritis II: Diagnostic Studies and Management
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...
01:26Urinary Tract Infection I: Introduction
Urinary tract infections (UTIs) impact various parts of the urinary system, including the kidneys, ureters, bladder, and urethra. These infections are generally bacterial, with Escherichia coli being the most common causative agent, often originating from the gastrointestinal tract. However, other bacteria, such as Staphylococcus saprophyticus, Klebsiella pneumoniae, and Proteus mirabilis, are also known to cause UTIs. The type, location, and underlying complexity of the UTI guide both...
01:28Urologic Endoscopic Procedure: Cystoscopic Examination
Meaning of Cystoscopic Examination:Cystoscopy is an essential diagnostic tool in urology that is used to assess the structure and function of the genitourinary system. It provides a direct view of the urethra, bladder, and, in some cases, the ureteral openings. This procedure helps detect structural abnormalities, infections, cancers, and blockages in the urinary tract. There are two types of cystoscopy:Flexible cystoscopy is commonly performed in outpatient settings due to its less invasive...
01:30Urinary Tract Infection III: Diagnostic Studies and Interprofessional Care
A healthcare provider can diagnose a urinary tract infection (UTI) through several methods:Medical History and Symptoms: The provider will take a detailed medical history and ask about symptoms such as frequent urination, burning sensation during urination, and lower abdominal pain.Urinalysis: A clean-catch urine sample is collected in a sterile container and tested for the presence of bacteria, white blood cells (leukocytes), nitrites, blood, and protein. The presence of leukocytes and...
01:22Ureters
The ureters are retroperitoneal tubes located on either side of the vertebral column. They are responsible for transporting urine from each kidney to the urinary bladder. These tubes have thick walls and are approximately 25-30 cm long. Their diameter is around 10 mm at the renal pelvis, gradually narrowing to 1 mm as the ureter obliquely enters the posterior bladder wall through the ureteric orifices. The shape of these orifices is slit-like, which helps to prevent urine backflow toward the...