武汉的李先生平常很喜欢吃虾,因为一次意外经虾壳呛咳到了肺里,最终导致了癌前病变。据李先生回忆,最近六年,他在和朋友聚餐时,被朋友讲的笑话逗得不小心把虾壳呛到了肺里。当时李先生也没在意。虽然已经咳嗽了半
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