Related Experiment Video
Updated: Apr 13, 2026

Recurrent Escherichia coli Urinary Tract Infection Triggered by Gardnerella vaginalis Bladder Exposure in Mice
Published on: December 4, 2020
Urethral catheter-related bladder wall lesions simulating inflammatory pseudotumor in a neonate
Samira Samiee-Zafarghandy1, Luis Guerra2, Kaldoun Koujok3
1Department of Clinical Pharmacology, Children's National Medical Center, Washington, DC, USA.
Background:
Inflammatory pseudotumors of the bladder are rare in newborns. Considering the potential for malignancy, invasive diagnostic assessment and therapeutic surgical excision have been described as the approach of choice.
Case Report:
We present a case of urethral catheter-related injury causing multifocal lesions simulating inflammatory pseudotumors of the bladder, diagnosed in a newborn presenting with persistent priapism. This case is distinct by virtue of its very rapid spontaneous regression of the bladder wall lesions within 4 days.
Conclusions:
Our neonatal case, along with previously described pediatric pseudotumor of the bladder, show the potential for spontaneous regression of these lesions and emphasizes the importance of balancing the potential risks and benefits of aggressive diagnostic or therapeutic interventions. Frequent diagnostic imaging and close follow-up should be considered as an alternative in young pediatric populations.
Related Concept Videos
Urinary Bladder
In males, the bladder is situated in front of the rectum, while in females, it is positioned anterior to the vagina and uterus. The bladder floor contains an inverted triangular area called the trigone, defined by the two ureteric...
Imaging Studies VI: Voiding Cystourethrography and Cystography
Urinary Tract Infection III: Diagnostic Studies and Interprofessional Care
Urinary Tract Infection II: Pathophysiology
Urinary Tract Calculi II: Pathophysiology and Clinical Manifestations
Acute Pyelonephritis I: Introduction

