患者:女性,31岁。因咳嗽、咯痰、痰中带血1个月,于1997年9月入院。查体未见阳性特征。胸部正侧位像示:右肺内基底段见一直径5.0cm的圆形阴影,密度不均,边缘光滑、锐利。胸部CT示:该病灶呈不规则的软组织块影,密度欠均匀,CT值为20.9～44.1Hu,界面有分叶及毛刺征。纤维支气... Patient: Female, 31 years old. He was admitted to the hospital in September 1997 because of cough, expectoration, and sputum blood for 1 month. There were no positive features in the examination. Lateral image of the chest shows: In the basement segment of the right lung, a circular shadow with a diameter of 5.0 cm is seen, with uneven density, smooth edges, and sharp edges. Chest CT showed that the lesion was irregular soft tissue block shadow, the density is not uniform, the CT value was 20.9 ~ 44.1Hu, the interface has leaf and burr sign. Fiber support gas...