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Updated: Mar 22, 2026

Posterior Approach for Debridement of the Psoas Abscess
Published on: March 2, 2020
[Psoas abscess caused by Staphylococcus lugdunensis].
María Tamargo Delpón1, Pablo Demelo-Rodríguez1, Juan Carlos Cano Ballesteros1
1Departamento de Medicina Interna, Hospital General Universitario Gregorio Marañón, Madrid, España.
Staphylococcus lugdunensis, a bacterium of increasing clinical significance, can cause rare psoas abscesses. This case highlights successful treatment of such an infection with intravenous cloxacillin in a patient with diabetes and rheumatoid arthritis.
Area of Science:
- Medical microbiology
- Infectious diseases
- Clinical case reports
Background:
- Staphylococcus lugdunensis is an emerging pathogen with diverse clinical presentations.
- Coagulase-negative staphylococcal infections are increasingly recognized.
- Psoas abscesses are uncommon, particularly those caused by S. lugdunensis.
Observation:
- A rare case of psoas abscess caused by Staphylococcus lugdunensis is presented.
- The patient had comorbidities including diabetes mellitus and rheumatoid arthritis.
- The abscess was located in the psoas muscle.
Findings:
- Staphylococcus lugdunensis was identified as the causative agent of the psoas abscess.
- Intravenous cloxacillin was administered as the treatment modality.
- The patient showed a positive clinical response to the antibiotic therapy.
Implications:
- This case expands the known spectrum of infections caused by Staphylococcus lugdunensis.
- It underscores the importance of considering S. lugdunensis in complex infections.
- Successful treatment with cloxacillin suggests its efficacy in managing S. lugdunensis psoas abscesses.
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