患者女,49岁。胆石症手术前常规胸部检查偶然发现右肺上叶占位性病变。患者平素偶有胸闷、气短,干咳。胸部X线平片:右肺上野内带见一椭圆形病灶,大小约4 cm×3 cm,密度均匀,边缘光滑,境界清楚(图1、2)。CT平 Female patient, 49 years old. Cholelithiasis routine chest check before surgery accidentally found the right upper lobe occupying lesions. Patients usually have occasional chest tightness, shortness of breath, dry cough. Chest X-ray: In the right upper lung, an oval lesion is seen in the upper part of the right lung. The size is about 4 cm × 3 cm. The density is uniform and the edge is smooth with a clear outline (Figure 1 and 2). CT flat