Mor phological features of cancerous cavity had significant relationship with types and grading of pulmonary neoplasm, such as irregular inner bor der ofcavity, thickness of cavity wall and the position of cavity in mass.

• 空洞内缘不规则似癌梁样改变，空洞壁厚度与空洞在肿瘤中位置特别是肿瘤越小，形成的空洞越小； 肿瘤越大，空洞偏大，且肿瘤又呈分叶样改变等与肿瘤类型与分化程度有明显关系。