目的：分析肺内孤立性薄壁囊腔型肺癌的螺旋CT影像特征,提高对该病的诊断水平。方法：本研究中把螺旋CT影像上表现为囊腔状且其75%以上囊壁厚度小于4 mm的肺癌定义为薄壁囊腔型肺癌。回顾性分析13例经手术或穿刺病理证实的肺内孤立性薄壁囊腔型肺癌的螺旋CT影像资料。结果：本组13例病例中,10例呈现囊腔壁厚度不均,9例可见短毛刺征,7例可见壁结节形成,增强扫描时壁结节呈不同程度对比强化,7例可见胸膜凹陷/增厚等异常改变,5例呈囊内壁不光滑及腔内可见血管穿行,3例病灶边缘可见分叶征；病理结果显示其中11例为腺癌,1例为支气管肺泡癌,1例为鳞癌。结论：肺内孤立性薄壁囊腔型肺癌的影像学表现具有一定特征性,主要表现为囊壁厚度不均、短毛刺征、壁结节形成、胸膜改变及囊内壁不光滑等。%Objective:To analyse the spiral CT features of pulmonary solitary thin-walled cystic lung cancer and improve the diagnosis accuracy. Methods:We defined a cavitary lesion with a wall thickness of 4 mm or less at least 75%of the circumference of the lesion as thin-walled cystic lung cancer. 13 cases of the pulmonary solitary thin-walled cystic lung cancer proved by pathology were examined with spiral CT in retrospectively. Results:In 13 cases,there were 10 cases with cystic wall uneven,9 cases with speculation sign,7 cases with mural nodules which had been enhanced when go through the enhanced scanning,7 cases with pleural indentation or pleural thickening,5 cases showed the inner wall was irregular and blood vessel passing through the cystic,3 cases with lobulation sign. The pathologic results showed 11 cases were adenocarcinoma,1 case was bronchioloalveolar carcinoma and 1 case was squamous carcinoma. Conclusion:The spiral CT imaging of pulmonary solitary thin-walled cystic lung cancer show some characteristics, such as the wall thickness uneven, speculation sign,mural nodule and pleural indentation or pleural thickening,the inner wall was irregular and blood vessel passing through the cyst,lobulation sign.
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