Abstract: Norcardiosis is a limited or disseminated purulent or granulomatous disease caused by Nocardia infection, which mainly involves the lungs, skin, and central nervous system (CNS), and the lungs are the most commonly involved. It is common in immunosuppressed hosts, but can also occur in immunocompetent hosts. Immunosuppressed hosts are more prone to disseminated the disease and have worse prognosis. As a rare disease with a low clinical incidence, norcardiosis is even less prevalent in immunocompetent hosts. Recently, an immunocompetent patient with bronchiectasis and pulmonary Nocardia asiatica infection was admitted to Department of Respiratory Medicine, Guangzhou Red Cross Hospital, Jinan University, and is reported below with the review of literature.

Key words: Bronchiectasis, Actinomycosis, Nocardia, Pulmonary infection

摘要： 诺卡菌病是由诺卡菌感染引起的局限性或播散性化脓性或肉芽肿性疾病，它主要涉及肺部、皮肤、中枢神经系统（central nervous system，CNS），其中肺部受累最常见。常见于免疫功能抑制宿主，但也可发生在免疫功能正常宿主。免疫抑制宿主更容易患播散性疾病，预后更差。诺卡菌病临床发病率低，是一种罕见病，免疫功能正常宿主患病率更低。最近，暨南大学附属广州市红十字会医院呼吸内科收治了1例支气管扩张症并肺亚洲诺卡菌感染的免疫功能正常患者，以下结合文献回顾进行报道。

关键词: 支气管扩张, 放线菌病, 诺卡菌, 肺部感染