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Primary lung abscess caused by Staphylococcus lugdunensis.

Deng-Wei Chou1, Chao-Tai Lee2

  • 1Department of Critical Care Medicine, Tainan Municipal Hospital, 670 Chungde Road, East District, Tainan, Taiwan.

Journal of Infection and Chemotherapy : Official Journal of the Japan Society of Chemotherapy
|July 29, 2017
PubMed
Summary

Staphylococcus lugdunensis, a skin bacterium, caused a primary lung abscess in a patient. This case highlights the potential of this coagulase-negative staphylococci strain as a lung pathogen.

Keywords:
AlcoholismCoagulase-negative staphylococciMinimal inhibitory concentrationPrimary lung abscessStaphylococcus lugdunensis

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Area of Science:

  • Microbiology
  • Infectious Diseases

Background:

  • Staphylococcus lugdunensis, a coagulase-negative staphylococci, is typically commensal on human skin.
  • It has emerged as a significant pathogen, causing various infections.
  • No prior reports documented primary lung abscesses attributed to S. lugdunensis.

Observation:

  • A 54-year-old male with a history of alcoholism presented with primary lung abscesses.
  • Initial antibiotic treatment was ineffective, necessitating surgical resection of the abscess and pleural effusion.
  • Histopathology confirmed a lung abscess with gram-positive bacteria, identified as S. lugdunensis.

Findings:

  • S. lugdunensis was successfully cultured from the lung abscess.
  • The isolate demonstrated susceptibility to a broad range of antibiotics, including amoxicillin/clavulanate.
  • The patient recovered fully after surgical intervention and a 3-week course of amoxicillin/clavulanate.

Implications:

  • This case represents the first documented instance of S. lugdunensis causing a primary lung abscess.
  • S. lugdunensis should be recognized as a potential monomicrobial cause of primary lung abscesses.
  • Clinicians should consider S. lugdunensis in the differential diagnosis of lung abscesses, particularly in at-risk populations.