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Characterization of Inflammatory Responses During Intranasal Colonization with Streptococcus pneumoniae
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Aggressive Presentation of Streptococcus constellatus.

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Summary
This summary is machine-generated.

The Streptococcus anginosus group (SAG) can cause severe lung abscesses and empyema. This case highlights the need for surgical intervention in complex SAG infections, alongside antibiotic treatment.

Keywords:
deep vein thrombosis (dvt)prolonged antibioticspulmonary decorticationstreptococcus constellatus

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Area of Science:

  • Microbiology
  • Infectious Diseases
  • Surgical Pathology

Background:

  • The Streptococcus anginosus group (SAG) comprises commensal bacteria of human mucosal surfaces.
  • SAG bacteria, though typically benign, can cause severe pyogenic infections, including abscesses.
  • Distinguishing SAG as a pathogen versus a contaminant in respiratory cultures is clinically challenging.

Observation:

  • A 59-year-old male presented with chest pain and cough following deep vein thrombosis and pulmonary embolism.
  • The patient developed a rapidly progressing Streptococcus constellatus lung abscess in the right middle lobe.
  • Complications included a right hemithorax empyema, necessitating surgical intervention.

Findings:

  • Surgical management involved right chest exploration, decortication, parietal pleurectomy, and partial right middle lobe excision.
  • The patient received a four-week course of ertapenem for antibiotic therapy.
  • This case underscores the potential severity of SAG-related thoracic infections.

Implications:

  • Aggressive surgical management may be crucial for treating complex SAG-induced lung abscesses and empyema.
  • Early recognition and appropriate treatment are vital for favorable outcomes in invasive SAG infections.
  • Further research into risk factors and diagnostic markers for invasive SAG disease is warranted.