如有你有帮助,请购买下载,谢谢!
同部位肺炎性假瘤与肺癌CT鉴别诊断
【关键词】 肺炎性假瘤
[摘 要] 目的:对照分析同部位肺炎性假瘤和肺癌CT影像特征,探讨其鉴别诊断价值。方法:搜集相同部位的68例肺炎性假瘤和68例肺癌CT资料,全部病例均行手术病理诊断证实。结果:中央型和周围型肺炎性假瘤与肺癌分别为10对和58对病例。中央型肺癌均有“癌头尾”征,中央型肺炎性假瘤段以上支气管通畅,无阻塞性肺炎征象。周围型肺癌呈“膨胀形态”征,周围型肺炎性假瘤呈“收缩形态”征,统计学上差异有非常显著性意义(P=0.000)。结论:根据肺炎性假瘤和肺癌各自有的CT形态和征象,可以提高鉴别诊断的准确性。
[关键词] 肺炎性假瘤;肺肿瘤;体层摄影术;X线计算机;鉴别诊断
The Differential Diagnosis by CT:The Same Site of Pulmonary Inflammatory Pseudotumor and Lung Cancer
Abstract:Objective To comparatively analyze the CT characteristic of pulmonary pseudotumors and lung cancers in the same sites,and to investigate the value on their differential diagnosis.Methods The CT data of 68 patients of pulmonary inflammatory pseudotumors and 68 patients of lung cancers were collected retrospectively;all patients were confirmed by pathology.Results All the pulmonary pseudotumors and lung
1页
如有你有帮助,请购买下载,谢谢!
cancers were classified into 10 couples central and 58 couples peripheral ones according to their sites.The central bronchogenic cancers usually appeared “the head and tail of cancer” sign,otherwise,the central inflammatory pseudotumors did not involve the bronchi,and the obstructive pneumonia was usually not found.The peripheral lung cancers usually appeared “expanding contour” sign,but the pulmonary inflammatory pseudotumors appeared “contracting contour” sign.Conclusion The CT characteristic of pulmonary pseudotumor and lung cancer can help us effectively in the differential diagnosis of them.
Key words:Pulmonary inflammatory pseudotumor;Lung cancer;Tomography;Xray computed;Differential diagnosis
肺炎性假瘤的CT诊断文献报道较多,至今病因不明。本文回顾性对照分析68对相同部位肺炎性假瘤与肺癌的CT影像特征,并且提出了周围型肺炎性假瘤的“收缩形态”征和肺癌的“膨胀形态”征及中央型肺癌的“癌头尾”征,以提高肺炎性假瘤与肺癌的CT鉴别诊断能力。
1 资料与方法 1.1 68例肺炎性假瘤
男50例,女18例,年龄5岁~73岁,平均39岁,主要症状为咳嗽、咳痰40例,其中痰中带血30例,低热12例、胸痛17例、13例无症状为体检发现。均经手术病理证实。
2页
如有你有帮助,请购买下载,谢谢!
1.2 68例肺癌
均经手术病理证实,其中男38例,女30例,年龄36岁~78岁,平均57岁。临床表现咳嗽、咯痰32例,痰中带血28例、胸痛11例,低热2例,9例无症状为体检发现。
1.3 使用设备
为美国GE公司HiSpeed ZX螺旋CT。本组病例胸部CT检查扫描范围从肺尖至膈顶,层厚8 mm~10 mm,层距8 mm~10 mm。炎性肿块病人薄层扫描15例(层厚3 mm~5 mm,层距3 mm~5 mm),增强扫描6例。肺癌病人薄层扫描30例,增强3例。
2 结果
2.1 中央型肺炎性假瘤主要CT表现 病灶小时,多无推压或侵犯支气管。病灶结节大时,可推压邻近段支气管,但无阻塞肺炎改变,可有阻塞性肺气肿。病灶边缘多清晰、规整,密度可均匀,少部分病灶内伴有小空泡及液化坏死区。本组肺炎性假瘤的中央型比周围型发病率明显少(由于例数太少,未在作详细统计学处理)。
2.2 中央型肺癌以“癌头尾”征表现为著 中心型肺癌小结节可引起阻塞性肺炎,肺癌大结节多完全堵塞段支气管或叶支气管造成肺段或肺叶不张而掩着病灶外缘,特征明显。
2.3 本组周围型肺炎性假瘤及肺癌例数较多,两种病变内缘空间大,有向肺门发展和支气管、血管及淋巴管双向引流作用,变化很大,CT表现有对比意义(见表2)。
2.4 58例相同部位的周围型肺炎性假瘤及肺癌的病变分布及
3页