[Actinomyces peripheral pulmonary nodule]

Actinomycosis is a chronic suppurative infection usually caused by Actinomyces israelii. Pulmonary involvement is a rare condition. The diagnosis is often delayed because of various appearances and the difficulty in microbiologic identification. We report a case of pulmonary actinomycosis in a 58 year old man who presented training respiratory symptoms. Clinical and radiological picture was mimic lung cancer. The definite was made after thoracic surgery. The patient's clinical condition improved with antibiotic therapy based on penicillin G then amoxicillin for 6 months. Through this new case, we discuss the possibilities of improvement of diagnosis and therapeutic approach of pulmonary actinomycosis by reducing of invasives procedures