Tuberc Respir Dis > Volume 71(5); 2011 > Article
Tuberculosis and Respiratory Diseases 2011;71(5):359-362.
DOI:    Published online November 1, 2011.
A Case of Pneumonia and Parapneumonic Effusion Caused by Streptococcus parasanguinis.
Myoung Rin Park, Dong Il Park, Su Jin Yoo, Sun Young Jung, Hyuk Soo Eun, Min Jung Kim, Ji Won Park, Hee Sun Park, Sung Soo Jung, Ju Ock Kim, Sun Young Kim, Jeong Eun Lee
Department of Internal medicine, Chungnam National University School of Medicine, Daejeon, Korea.
Streptococcus parasanguinis is a Viridans group bacteria that is most often discovered in the oral cavity and causes dental plaque and endocarditis in a rat model. It has low virulence but an unknown relationship to human respiratory infections. We report on a 61-year-old woman who developed hemoptysis followed by pleuritic chest pain after conscious sedation during a gastroscopic polypectomy and was diagnosed with pneumonia and parapneumonic effusion from Streptococcus parasanguinis isolated in pleural fluid. Microaspiration during the procedure was presumed to play a role in the pathogenesis.
Key Words: Streptococcal Infections, Pneumonia, Pleural Effusion

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