Annals of Clinical Microbiology, The official Journal of the Korean Society of Clinical Microbiology

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pISSN 2288-0585 eISSN 2288-6850

Lung Abscess and Bacteremia Caused by Neisseria flavescens and Streptococcus sanguis in Patient with Idiopathic Hypereosinophilic Syndrome

Case report

Annals of Clinical Microbiology (Ann Clin Microbiol) 2012 December, Volume 15, Issue 4, pages 147-150.

https://doi.org/10.5145/ACM.2012.15.4.147

Lung Abscess and Bacteremia Caused by Neisseria flavescens and Streptococcus sanguis in Patient with Idiopathic Hypereosinophilic Syndrome

Ju Hyun Kong1, Sung Hyun Shin1, Su Eun Park1, Hee Ju Park1, Jongyoun Yi2, Shine Young Kim3, Seung Kook Son1
Departments of 1Pediatrics, 2Laboratory Medicine, Pusan National University School of Medicine, Yangsan, 3Department of Laboratory Medicine, Pusan National University Hospital, Busan, Korea

Abstract

Neisseria flavescens has been rarely reported as a pathogen in the literature. We experienced a case of N. flavescens bacteremia and lung abscess co-infected with Streptococcus sanguis in patient with idiopathic hypereosinophilic syndrome. A 15-year-old boy was diagnosed with idiopathic hypereosinophilic syndrome complicated with pulmonary thromboembolism. He was given systemic steroids and thrombolytics. After 8 weeks of therapy, a lung abscess appeared on the plain chest radiograph. We treated him with empirical antibiotics and carried out surgical drainage. Two types of microorganisms were cultured from both blood and pus samples, obtained in the first day of hospitalization. Pus was aspirated from the lung abscess with an aseptic technique. Neisseria species and S. sanguis were identified using traditional methods. To confirm the identity of the Neisseria species, we conducted further testing using 16S ribosomal ribonucleic acid sequencing whereupon N. flavescens was identified. This is the first case report of pulmonary infection caused by N. flavescens. We suggest that N. flavescens may act as a pathogen. (Korean J Clin Microbiol 2012;15:147-150)

Keywords

Neisseria flavescens, Sepsis, 16S ribosomal RNA sequencing