年近五旬的林先生是机关公务员,身体一直很好,只是人有些发胖,几年来没有进过医院。谁知,去年年底的单位体检中,发现他的肾脏有一个恶性肿瘤,直径达12厘米,并已向腹膜后淋巴结转移。林先生百思不得其解:“我怎么一直没有感觉到疼?” Nearly Pentecostal Mr. Lin is the organ civil servants, the body has been very good, but some people get fat, have not been to the hospital for several years. Surprisingly, the unit medical examination at the end of last year found that his kidneys had a malignant tumor with a diameter of 12 cm and had metastasized to the retroperitoneal lymph nodes. Mr. Lin puzzled: “I never felt hurt? ”