Peribacillus Simplex and Klebsiella Pneumoniae Responsible for Pyonephrosis with Secondary Psoas Abscess: a Case Report

Overview

Journal Access Microbiol

Date 2025 Jan 15

PMID 39810798

Authors

Zakaria Malihy

Tilila Abassor

Yassine Ben Lahlou

Elmostafa Benaissa

Mariama Chadli

Affiliations

Soon will be listed here.

Abstract

Bacterial urinary tract infections (UTIs) are common, ranging from benign cystitis to complicated pyelonephritis, which can lead to severe complications such as pyonephrosis and sepsis. Pyonephrosis, characterized by the presence of pus in the renal cavities, often requires urgent urological intervention. We report a unique case of pyonephrosis with a psoas abscess caused by and in a 64-year-old diabetic female patient. This is the first case of pyonephrosis caused by . The patient presented with acute right lumbar pain, fever and altered consciousness. Imaging revealed severe right hydronephrosis, pyonephrosis and a perirenal phlegmon infiltrating the psoas with abscesses. Surgical drainage and nephrectomy were performed. Microbiological and proteomic analyses identified and . This case highlights the importance of considering environmental bacteria like in severe infections and ensuring rigorous protocols to avoid contamination. Successful management of pyonephrosis relies on prompt surgical drainage and appropriate antibiotic therapy based on culture results.

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