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Updated: May 31, 2026

A Retrospective Study on Endoscopic Surgery for the Treatment of Paravertebral Abscess in Spinal Tuberculosis Patients
Published on: October 25, 2024
[Postoperative recurrence of subdural empyema]
Y Romero-Pizarro1, M Muñoz-Algarra, C Fernández-Mateos
1Servicios de Medicina Interna. Hospital Puerta de Hierro. Majadahonda. Madrid.
Abstract:
We present a case of recurrent subdural post-surgical empyema by Proprionibacterium acnes after a first drained empyema in which no microbiological diagnosis was reached. P. acnes is a gram-positive anaerobic organism which is part of the saprophytic flora of the skin and others parts of the body. However, it can cause infections, as in the central nervous system, especially post-surgical infections in which can be the second more frequent organism after Staphylococcus aureus. P. acnes grows slowly and shows better growth in liquid anaerobic media. It is usually resistant to metronidazol and sensitive to penicillin. In postoperative central nervous system infections we must take into account the possibility of this organism, process the sample properly and keep touch with the Microbiology Department.
Insights
Recurrent subdural empyema caused by Proprionibacterium acnes can occur after surgery. Prompt microbiological diagnosis and appropriate sample handling are crucial for effective treatment of these rare central nervous system infections.
Area of Science:
- Neuroscience
- Infectious Diseases
- Microbiology
Background:
- Subdural empyema is a serious post-surgical complication.
- Proprionibacterium acnes is a skin commensal that can cause opportunistic infections.
- Accurate microbiological diagnosis is essential for guiding treatment.
Observation:
- A case of recurrent subdural empyema caused by P. acnes is presented.
- The initial empyema lacked a microbiological diagnosis.
- P. acnes is a slow-growing, gram-positive anaerobic organism.
Findings:
- P. acnes is the second most common cause of post-surgical CNS infections after Staphylococcus aureus.
- P. acnes demonstrates resistance to metronidazole and sensitivity to penicillin.
- Optimal growth of P. acnes is achieved in anaerobic liquid media.
Implications:
- Clinicians should consider P. acnes in postoperative CNS infections.
- Proper sample processing and consultation with microbiology are vital.
- Early identification and targeted antibiotic therapy can improve patient outcomes.
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