选病情及手术方法与实验组一致的头颈癌病人46例作为对照组，不采用稀释式自身输血，有输血指征时输入异体血。
The other 46 patients with the same disease and operation were served as the control group, without autotransfusion and a donors blood was transfused only in case of need.
有手术指征应立即急诊手术，无手术指征的病人应留院或住院观察，以防有迟发临床表现而耽误诊治。
The patient with operation indication should be operated at once, while the others should be observed for some time to prevent the delayed clinical manifestation.
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