[名词解释] 肉瘤

下列哪种情况禁忌使用吗啡或哌替啶() ["A．肺心病合并肺性脑病","B．肺水肿","C．肺结核小量咯血","D．肺癌","E．干性胸膜炎"] 诊断纵隔恶性畸胎瘤的指征是() ["A．肿瘤直径超过5cm","B．位于前纵隔","C．含脂肪信号","D．局部受侵，肿瘤边缘不规则","E．以上均不是"] 室壁瘤 梗死 下列哪种炎症介质不具有阳性趋化作用() ["A．白细胞三烯B","B．C5A","C．TNF","D．IL-8","E．缓激肽"] 肉瘤