Case Report: Cervical lymphadenitis resulting from Pseudomonas aeruginosa diagnosed by metagenomic next-generation sequencing - Summary - MDSpire

Case Report: Cervical lymphadenitis resulting from Pseudomonas aeruginosa diagnosed by metagenomic next-generation sequencing

  • By

  • Lihong Gao

  • Yang Wen

  • Xiaoyu Jing

  • May 18, 2026

  • 0 min

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Objective:

To report a case of cervical lymphadenitis in a pediatric patient caused by Pseudomonas aeruginosa and highlight the utility of metagenomic next-generation sequencing in diagnosis.

Key Findings:
  • Cervical lymphadenitis can be caused by Gram-negative bacteria, specifically Pseudomonas aeruginosa.
  • Metagenomic next-generation sequencing effectively identified the pathogen when traditional cultures failed.
  • The patient showed significant clinical improvement following targeted antibiotic therapy.
Interpretation:

The case underscores the importance of considering opportunistic pathogens in pediatric infections and the role of advanced sequencing technologies in diagnosis.

Limitations:
  • The study is based on a single case, limiting generalizability.
  • The low coverage rate of P. aeruginosa in mNGS results may affect the reliability of the diagnosis.
Conclusion:

Metagenomic next-generation sequencing is a valuable tool in diagnosing atypical infections in pediatric patients, particularly when conventional methods are inconclusive.

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