Abstract
A 57-year-old man had undergone right upper lobectomy and S^6a partial segmental resection for squamous cell carcinoma that developed in B^3b and had been complicated with pulmonary tuberculosis. Seven months after the operation, he was readmitted complaining of persistent cough and dyspnea on exertion. The chest roentgenogram showed severe loss of volume of the right middle lobe and compensatory overinflation of the right lower lobe. Bronchofiberscopy of the right bronchus revealed stenosis of the truncus intermedius and the middle lobe bronchus and protrusions in the orifice of the basal segmental bronchus. As bronchography, pulmonary arteriography, ventilation and perfusion scintigraphy and aerosol inhalation scintigraphy suggested that the residual bronchial stenosis widely disturbed the ventilation and perfusion of the right lung, he underwent pneumonectomy. The pathological investigation of the resected lung revealed that the protrusions of the bronchial wall were composed of folded bronchial cartilage. It was considered that in this case, stenosis and protrusions of the residual bronchus developed by bending of the bronchus and folding of the bronchial wall caused by movement and reexpansion of the residual lung after right upper lobectomy and S^6a partial segmental resection.
