Pneumonia, a pulmonary abscess, and an empyema caused by Parvimonas micra

Yuxiang Li; Xia Wang; Lidi Zhang; Yanxia Huang; Yong’an Liu

doi:10.3855/jidc.20550

Pneumonia, a pulmonary abscess, and an empyema caused by Parvimonas micra

Authors

Yuxiang Li Department of Critical Care Medicine, People’s Hospital Yongdeng, Lanzhou, Gansu Province, China
Xia Wang Department of Critical Care Medicine, Jiugang Hospital, Jiayuguan, Gansu Province, China
Lidi Zhang Department of Critical Care Medicine, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
Yanxia Huang Department of Critical Care Medicine, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China https://orcid.org/0000-0002-5690-9649
Yong’an Liu Department of Critical Care Medicine, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China https://orcid.org/0009-0004-3229-3757

DOI:

https://doi.org/10.3855/jidc.20550

Keywords:

Case report, Parvimonas micra, infection, NGS

Abstract

Background: Pneumonia with an empyema caused by anaerobic bacteria is rare but can be life-threatening, especially in immunocompromised patients.

Case presentation: A 67-year-old man with diabetes and hypertension who presented with pneumonia and pleural effusion and was unresponsive to initial broad-spectrum antibiotics is presented. Next-generation sequencing identified Parvimonas micra and other pathogens. Therefore, targeted therapy with levornidazole was initiated. The patient's condition improved significantly after this treatment.

Conclusions: This case highlights the importance of considering anaerobic bacteria in immunocompromised patients and the utility of next-generation sequencing in identifying atypical pathogens.

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Published

2025-08-31

How to Cite

Li Y, Wang X, Zhang L, Huang Y, Liu Y (2025) Pneumonia, a pulmonary abscess, and an empyema caused by Parvimonas micra. J Infect Dev Ctries 19:1262–1268. doi: 10.3855/jidc.20550

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Issue

Vol. 19 No. 08: August 2025

Section

Case Reports

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