title: Bronchial pleomorphic adenoma coexisting with lung cancer.
abstract: Pleomorphic adenoma usually occurs in the salivary glands but rarely in the trachea or bronchi. A 71-year-old man had abnormal shadows on a chest X-ray. Chest CT revealed one tumor in the right basal segment of the lung and another, in the left main bronchus. Bronchoscopic biopsy of the right tumor revealed well-differentiated squamous cell carcinoma. Right lower lobectomy and lymph node dissection were performed (pT2N0M0, stage IB). At the orifice of the left main bronchus, bronchoscopy identified a polypoid lesion nearly obstructing the airway. The lesion was resected with hot snare ablation. The histological examination revealed a mixture of epithelial and myxoid mesenchymal elements, characterized by ductal structures, squamous metaplasia, and cartilage tissue. The diagnosis was bronchial pleomorphic adenoma coexisting with squamous cell carcinoma of the lung.
authors: Department of General Thoracic Surgery, National Hospital Organization Tokyo Medical Center, Japan. taichiro@1997.jukuin.keio.ac.jp
authors: Taichiro
authors: T
authors: Goto
authors: Arafumi
authors: A
authors: Maeshima
authors: Kumi
authors: K
authors: Akanabe
authors: Reo
authors: R
authors: Hamaguchi
authors: Misa
authors: M
authors: Wakaki
authors: Yoshitaka
authors: Y
authors: Oyamada
authors: Ryoichi
authors: R
authors: Kato