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Multiple hepatic and brain abscesses caused by Parvimonas micra: A case report and literature review
N Cesta1, L Foroghi Biland1, B Neri2
1Department of System Medicine, University of Rome "Tor Vergata", Rome, Italy; Infectious Diseases Clinic, University Hospital "Tor Vergata", Rome, Italy.
Abstract:
Gram-positive anaerobic cocci (GPAC) are responsible for 30% of anaerobic infections. Parvimonas micra is an emergent pathogen that is part of the oral and gastrointestinal commensal flora, and its role in several infection processes has recently emerged thanks to the improvement of diagnostic techniques. P. micra bacteraemia is reported in immunocompromised patients and is often complicated by abscesses. Here, we present a case study of multiple hepatic and brain abscesses caused by P. micra bacteraemia in a patient with complicated diverticulitis.
Insights
Gram-positive anaerobic cocci cause many infections. Parvimonas micra, an emerging pathogen, was linked to liver and brain abscesses in a patient with complicated diverticulitis.
Area of Science:
- Microbiology
- Infectious Diseases
- Clinical Medicine
Background:
- Gram-positive anaerobic cocci (GPAC) account for 30% of anaerobic infections.
- Parvimonas micra is a commensal bacterium of oral and gastrointestinal flora.
- Advancements in diagnostics highlight P. micra's emerging role in infections.
Observation:
- P. micra bacteremia is observed in immunocompromised individuals.
- This condition is frequently complicated by abscess formation.
- A case of P. micra bacteremia leading to hepatic and brain abscesses is presented.
Findings:
- The study details a case of multiple hepatic and brain abscesses.
- These abscesses were caused by Parvimonas micra bacteremia.
- The patient had a history of complicated diverticulitis.
Implications:
- This case underscores the potential pathogenicity of P. micra.
- It highlights the importance of considering P. micra in polymicrobial infections.
- Improved diagnostic methods are crucial for identifying P. micra as a causative agent.

