局灶性磨玻璃征-早期周围型肺癌的重要CT征象

目的:探讨局灶性磨玻璃征(Ground Glass Opacity GGO)对早期周围型肺癌的诊断价值。方法:搜集临床、CT资料完整,经手术病理证实的早期周围型肺癌27例(28个),对其CT表现,作一回顾性分析。结果:28个早期周围型肺癌直径均<2.0cm,呈园形或卵园形22个,其中纯GGO或部分GGO密度的有21个,并见有毛刺14个,血管集束征14个,胸膜凹陷13个,分叶征10个和小泡征8个。结论:局限性GGO为早期周围型肺癌重要CT征象之一,若同时具备下列4项中的一项或多项高度提示早期小肺癌:①结节呈圆或卵圆;②内部见实性结节(即部分GGO);③伴有分叶、毛刺、血管集束征、胸膜凹陷征等其它恶性征象;④短期复查未变化。

Focal ground glass opacity of lung: an important CT sign of early peripheral carcinoma of lung

Objective:To evaluate the value of focal area of ground glass opacity GGO in diagnosis of early peripheral lung ancer by MDCT.Methods:Twenty-seven patients with 28 peripheral lung nodules were discovered by CT.And,all of those nodules were proved to be small lung cancer by surgery and histo-pathology.Thin-slice section CT was performed in every patient.Results:Among the 28 nodules, the maximal diameter of the nodules were less than 20mm n=28,round or oval shape n=22,focal areas of pure GGO opacity mixed with isolated dense consolidaton n=21,vascular convergence sign n=14,spur formation n=14,lobulation n=10,and vacuolar sign n=8.Conclusion:An oval or round ground-glass opacity nodule of lung is one of the important signs of malignancy.Authors believed that when a GGO nodule combined with signs of round or oval shape,part solid,vascular convergence,spur formation,lobulation or pleural indentationetc,an early lung carcinoma should be highly suspected.