中叶综合征
狭义者系指右中叶所属支气管旁淋巴结肿大,压迫或穿入支气管腔,造成中叶肺不张,并易产生阻塞性肺炎。广义者,凡是局限于中叶的肺不张或慢性炎症,不论其病因如何,是否伴有支气管旁淋巴结肿大或支气管腔的狭窄,均可称为中叶综合征。
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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