A case of early lung cancer with microinvasion in the orifice of the left B1+2 and B3 is reported. A 71 year old male was presented with chief complaint of left intercostal neuralgia. The chest X-ray film showed no remarkable change except for pulmonary arterial shadow in the left upper lung field. Under bronchofiberscope, thickend bronchial mucosa and disappearance of longitudinal mucosal fold were detected in the orifice of the left B1+2 and B3. Squamous cell carcinoma was diagnosed histologically. Left upper lobectomy was performed, and microscopic characteristic of the resected specimen was microinvasive squamous cell carcinoma.
Experience of Early Occult Lung Cancer With Microinvasion
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