Supriya B G, Harisree S, Savio Jayanthi, Ramachandran Priya
Department of Microbiology, St. John's National Academy of Health Sciences, Koramangala, Bangalore, Karnataka, India.
Department of Pulmonary Medicine, St. John's National Academy of Health Sciences, Koramangala, Bangalore, Karnataka, India.
Indian J Pathol Microbiol. 2019 Apr-Jun;62(2):326-328. doi: 10.4103/IJPM.IJPM_706_17.
Actinomyces naeslundii is a commensal flora of the oral cavity and is generally considered as an avirulent saprophytic bacterium in immunocompetent patients. It can become an opportunistic anaerobic pathogen in oral cavity in patients with poor oral hygiene or tooth extraction and can cause periodontal disease. Pulmonary Actinomycosis is a rare manifestation and may be suspected in middle-aged male patients with cough and hemoptysis showing radiological findings of a peripheral mass or chronic consolidation in whom repeated aerobic cultures have yielded negative results. Here, we report isolation of A. naeslundii from the bronchoalveolar lavage sample from an immunocompetent patient who presented with chronic nonresolving pneumonia of 6 months duration.
内氏放线菌是口腔共生菌群，在免疫功能正常的患者中通常被认为是无毒的腐生菌。在口腔卫生差或拔牙的患者中，它可成为口腔中的机会性厌氧病原体，并可导致牙周疾病。肺放线菌病是一种罕见的表现，对于出现咳嗽和咯血、影像学表现为外周肿块或慢性实变且多次需氧培养结果为阴性的中年男性患者，可能会怀疑患有该病。在此，我们报告从一名免疫功能正常、患有持续6个月慢性不愈肺炎的患者的支气管肺泡灌洗样本中分离出内氏放线菌。
