Skip to content
1887

Access Microbiology open research platform logo Access Microbiology

Volume 7, Issue 1

and responsible for pyonephrosis with secondary psoas abscess: a case report Open Access

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.

  • Received:
  • Accepted:
  • Published Online:
Keyword(s): Peribacillus simplex , psoas abscess and pyonephrosis
© 2025 The Authors
  • This is an open-access article distributed under the terms of the Creative Commons Attribution License. The Microbiology Society waived the open access fees for this article.
Loading

Article metrics loading...

/content/journal/acmi/10.1099/acmi.0.000911.v3
2025-01-14
2026-02-19

Metrics

Loading full text...

Full text loading...

/deliver/fulltext/acmi/7/1/acmi000911.v3.html?itemId=/content/journal/acmi/10.1099/acmi.0.000911.v3&mimeType=html&fmt=ahah

References

  1. Bouassel A, Mellas S. A report of 25 cases. Hassan II University Hospital Center; 2024 http://www.chu-fes.ma/la-pyonephrose-a-propos-de-25-cas/ accessed 1 June 2024
  2. Tamburrini S, Lugarà M, Iannuzzi M, Cesaro E, De Simone F et al. Pyonephrosis ultrasound and computed tomography features: a pictorial review. Diagnostics 2021; 11:331 [View Article] [PubMed]
     [Google Scholar]
  3. Florido C, Herren JL, Pandhi MB, Niemeyer MM. Emergent percutaneous nephrostomy for pyonephrosis: a primer for the on-call interventional radiologist. Semin Intervent Radiol 2020; 37:74–84 [View Article] [PubMed]
     [Google Scholar]
  4. International Union of Microbiological Societies Validation of the publication of new names and new combinations previously effectively published outside the IJSB: List No. 28. Int J Syst Bacteriol 1989; 39:93–94 [View Article]
     [Google Scholar]
  5. Patel S, Gupta RS. A phylogenomic and comparative genomic framework for resolving the polyphyly of the genus Bacillus: Proposal for six new genera of Bacillus species, Peribacillus gen. nov., Cytobacillus gen. nov., Mesobacillus gen. nov., Neobacillus gen. nov., Metabacillus gen. nov. and Alkalihalobacillus gen. nov.. Int J Syst Evol Microbiol 2020; 70:406–438 [View Article]
     [Google Scholar]
  6. Manetsberger J, Caballero Gómez N, Soria-Rodríguez C, Benomar N, Abriouel H. Simply versatile: the use of Peribacillus simplex in sustainable agriculture. Microorganisms 2023; 11:2540 [View Article] [PubMed]
     [Google Scholar]
  7. Heyrman J, Logan NA, Rodríguez-Díaz M, Scheldeman P, Lebbe L et al. Study of mural painting isolates, leading to the transfer of “Bacillus maroccanus” and “Bacillus carotarum” to Bacillus simplex, emended description of Bacillus simplex, re-examination of the strains previously attributed to “Bacillus macroides” and description of Bacillus muralis sp. nov. Int J Syst Evol Microbiol 2005; 55:119–131 [View Article] [PubMed]
     [Google Scholar]
  8. Stackebrandt E, Frederiksen W, Garrity GM, Grimont PAD, Kämpfer P et al. Report of the ad hoc committee for the re-evaluation of the species definition in bacteriology. Int J Syst Evol Microbiol 2002; 52:1043–1047 [View Article]
     [Google Scholar]
  9. Delaporte B, Sasson A. Study of bacteria from arid soils of morocco: Bacillus maroccanus n. sp. C R Acad Hebd Seances Acad Sci D 1967; 264:2344–2346
     [Google Scholar]
  10. Xaplanteri P, Serpanos DS, Dorva E, Beqo-Rokaj T, Papadogeorgaki E et al. Bacillus simplex as the most probable culprit of penetrating trauma infection: a case report. Pathog 2022; 11:1203 [View Article] [PubMed]
     [Google Scholar]
  11. Pesce A, Toccaceli G. Uncommon strain for an intracranial infection: Bacillus simplex as suspected cause of brain abscess. J Neuroinfect Dis 2016; 07: [View Article]
     [Google Scholar]
  12. Rojas-Moreno C. Pyonephrosis and pyocystis. IDCases 2016; 6:104–105 [View Article] [PubMed]
     [Google Scholar]
  13. Chakit M, Zahir RA, Mesfioui A. Giant pyonephrosis related to nephrolithiasis in diabetes woman: a case report. Radiol Case Rep 2024; 19:2625–2628 [View Article] [PubMed]
     [Google Scholar]
  14. Elmanar R, Atmaja MHS. Imaging of Group B Streptococcus infection in pyonephrosis: a case report. Radiol Case Rep 2022; 17:3302–3307 [View Article] [PubMed]
     [Google Scholar]
  15. Evangelista I, Colombo A, Mazzone A, Mumoli N. Renal pyonephrosis with massive pleural empyema. Intensive Care Med 2021; 47:908–909 [View Article] [PubMed]
     [Google Scholar]
  16. Mokadem S, Nouioui MA, Kalai S, Taktak T, Mediouni H et al. Non-typhoidal Salmonella pyonephrosis in an asymptomatic immunocompetent patient. Case Rep Urol 2019; 2019:4198275 [View Article] [PubMed]
     [Google Scholar]
  17. Nema S, Brahmachari S. Pyonephrosis by Prevotella disiens and Escherichia coli coinfection and secondary peritonitis in an obstructive uropathy patient: a case report and review of the literature. J Family Med Prim Care 2020; 9:1263 [View Article]
     [Google Scholar]
  18. Batista da Costa J, Cornu J-N, Levgraverend D, Cordel H, Ridel C et al. Pyonephrosis caused by Salmonella typhi: a case report. Urol Int 2016; 96:241–243 [View Article] [PubMed]
     [Google Scholar]
  19. Garg S, Appannanavar SB, Mohan B, Taneja N. Pyonephrosis due to Chryseobacterium gleum: a first case report. Indian J Med Microbiol 2015; 33:311–313 [View Article] [PubMed]
     [Google Scholar]
  20. Alsowayan OS. A rare case of pyonephrosis in an infant induced by extended-spectrum beta-lactamase-producing Klebsiella pneumoniae. Saudi J Med Med Sci 2020; 8:156–159 [View Article] [PubMed]
     [Google Scholar]
  21. Stenfors Arnesen LP, Fagerlund A, Granum PE. From soil to gut: Bacillus cereus and its food poisoning toxins. FEMS Microbiol Rev 2008; 32:579–606 [View Article]
     [Google Scholar]
  22. Taylor JMW, Sutherland AD, Aidoo KE, Logan NA. Heat-stable toxin production by strains of Bacillus cereus, Bacillus firmus, Bacillus megaterium, Bacillus simplex and Bacillus licheniformis. FEMS Microbiol Lett 2005; 242:313–317 [View Article] [PubMed]
     [Google Scholar]
  23. Croce O, Hugon P, Lagier J-C, Bibi F, Robert C et al. Genome sequence of Bacillus simplex strain P558, isolated from a human fecal sample. Genome Announc 2014; 2:e01241-14 [View Article] [PubMed]
     [Google Scholar]
  24. Flores-Mireles AL, Walker JN, Caparon M, Hultgren SJ. Urinary tract infections: epidemiology, mechanisms of infection and treatment options. Nat Rev Microbiol 2015; 13:269–284 [View Article] [PubMed]
     [Google Scholar]
  25. Clegg S, Murphy CN. Epidemiology and virulence of Klebsiella pneumoniae. Microbiol Spectr 2016; 4: [View Article] [PubMed]
     [Google Scholar]
/content/journal/acmi/10.1099/acmi.0.000911.v3
Loading
Peribacillus simplex and Klebsiella pneumoniae responsible for pyonephrosis with secondary psoas abscess: a case report
Access Microbiology 7, 000911.v3 (2025); https://doi.org/10.1099/acmi.0.000911.v3
/content/journal/acmi/10.1099/acmi.0.000911.v3
/content/journal/acmi/10.1099/acmi.0.000911.v3
Loading

Data & Media loading...

Most cited Most Cited RSS feed

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An error occurred
Approval was partially successful, following selected items could not be processed due to error