Ossorio M A, O'Grady S A, Roy T M, Fields C L
Division of Respiratory and Environmental Medicine, University of Louisville School of Medicine, KY 40292.
J Ky Med Assoc. 1993 Jun;91(6):233-5.
The finding of a massive unilateral segmental defect with normal ventilation upon lung scanning does not always secure the diagnosis of acute pulmonary embolus. We present a patient whose ventilation-perfusion lung scan suggested a significant embolic phenomenon, but who was subsequently found to have compression of her right pulmonary artery by a dissecting aortic aneurysm. Conditions that present with a unilateral perfusion defect merit further evaluation with pulmonary arteriography.
肺部扫描发现巨大单侧节段性缺损且通气正常，并不总能确诊急性肺栓塞。我们报告一例患者，其通气-灌注肺扫描提示存在明显的栓塞现象，但随后发现是由主动脉夹层动脉瘤压迫右肺动脉所致。出现单侧灌注缺损的情况值得进一步行肺动脉造影评估。
