发生于肺中央（与绝大多数鳞状细胞癌一样）的鳞状细胞癌，刚好阻挡右主支气管。肿瘤质地坚韧，切面呈灰白色。
This is a squamous cell carcinoma of the lung that is arising centrally in the lung (as most squamous cell carcinomas do). It is obstructing the right main bronchus. The neoplasm is very firm and has a pale white to tan cut surface.
