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[问答题,简答题] 简述小儿腹泻

关于骨质增生的影像学表现的描述中,错误的是() ["骨密度增高","骨小梁增粗、增多","骨皮质增厚、致密","在T1WI上信号增高","可出现骨髓腔变窄甚至消失"] 骨骺或骨端钙化带凹陷而无硬化,在儿童关节病中常见于() ["佝偻病","坏血病","缺血性坏死","粘多糖病","关节结核"] 膝关节十字韧带撕裂时,错误的是() ["形态呈波浪状","韧带内可见高信号","正常韧带轮廓分裂","横轴位易于显示","检查时膝关节应摆轻度外旋位"] 有关椎间盘变性不正确的是() ["20岁以下髓核含水量85%~90%","变性时,含水量减少,至老年降为70%","变性的椎间盘以低信号为主","变性椎间盘内可有混杂不规则、斑点状信号","椎间盘变性一定都有椎间盘脱出"] 成骨型转移瘤最常见的原发灶是() ["肾癌","肝癌","肺癌","甲状腺癌","前列腺癌"] 简述小儿腹泻
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