Methods Spiral CT scan were performed in 58 patients with PPC which confirmed by pathology,Expression of E-cad in 58 cases were examined with SP immunohistochemical techniques.

• 方法对58例周围型肺癌患者行螺旋CT扫描,所有病例均经手术或穿刺病理证实,术后标本采用免疫组织化学SP法检测肿瘤组织中E-cad蛋白表达。