A 22-year-old woman presented with a feeling of chest tightness. Chest computed tomography showed a dendritic shadow in the left segment 1 + 2c, surrounded by hyperlucent emphysematous changes. Bronchoscopy revealed loss of the orifice of bronchus 1 + 2c. Thus a diagnosis of bronchial atresia was made, and a left upper division segmentectomy was performed. Bronchial atresia should be considered in the differential diagnosis of young patients with an abnormal chest shadow. It can be diagnosed based on the characteristic imaging and bronchoscopic findings. Surgery is indicated for symptomatic bronchial atresia and can provide complete amelioration of the condition.
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