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一病人拔牙两天后,出现寒战,高热,伴咳嗽,咳痰,迁延未愈,12 天后突然咳出大量脓臭痰及坏死组织,并有咯血,来诊。查体;T39℃,P89 次/分,右肺部叩诊呈浊音于右肺底听到湿罗音,实验室检查;WBC;28x10°/L,N;0.92,核左移明显,并有毒性果粒,X线两肺多发性散在的炎性阴影或球形致密阴影,其中可见透亮区和气液平。痰液留置可分三层。该病人应考虑为
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