text: 4.胸部X线检查归纳儿童SARS胸部X线片特点为：①单侧或双侧的局灶性非对称性浸润影，为斑片状、絮状或类圆形阴影，以肺下叶、肺门和肺野外带多见，应特别注意脊柱旁、心影后斑片状阴影；②胸部X线片改变在病程早期即可出现，进展较一般肺炎为快，阴影范围迅速扩大或从单侧变为双侧；③肺部阴影吸收较慢，肺纤维化、胸腔积液、肺门淋巴结肿大在儿童SARS患儿中较少见。
entities.entity: 胸部X线
entities.label: pro
entities.entity: 儿童SARS
entities.label: dis
entities.entity: 胸部X线
entities.label: pro
entities.entity: 肺下叶
entities.label: bod
entities.entity: 肺门
entities.label: bod
entities.entity: 肺野
entities.label: bod
entities.entity: 单侧或双侧的局灶性非对称性浸润影，为斑片状、絮状或类圆形阴影，以肺下叶、肺门和肺野外带多见
entities.label: sym
entities.entity: 脊柱
entities.label: bod
entities.entity: 脊柱旁、心影后斑片状阴影
entities.label: sym
entities.entity: 胸部X线
entities.label: pro
entities.entity: 肺炎
entities.label: dis
entities.entity: 阴影范围迅速扩大或从单侧变为双侧
entities.label: sym
entities.entity: 肺部
entities.label: bod
entities.entity: 肺部阴影吸收较慢
entities.label: sym
entities.entity: 肺
entities.label: bod
entities.entity: 胸腔
entities.label: bod
entities.entity: 肺门淋巴结
entities.label: bod
entities.entity: 肺纤维化、胸腔积液、肺门淋巴结肿大
entities.label: sym
entities.entity: 儿童SARS
entities.label: dis