患者　女 ,6 9岁。因“白内障”入院。发病以来一般情况良好 ,无低热、咳嗽、咯血史。体检及实验室检查无特殊。术前常规胸片示右肺上叶后段有一团块状实变影(图 1、2 )。ＣＴ平扫 :右肺上叶后段类圆形较低密度影 ,ＣＴ值2 2ＨＵ ,部分呈水样密度 ,中心可见内缘不规则之空洞。 Female patient, 6 9 years old. Due to “cataract” admission. The general condition since the onset of good, no fever, cough, hemoptysis history. Physical examination and laboratory tests no special. Preoperative routine chest radiograph shows the right posterior lobes have a lump of solid consolidation (Figure 1,2). CT scan: posterior segment of the right upper lobe circular lower density, CT value 2 2HU, part of the water-like density, the center can be seen irregular voids.