鳞癌与腺癌源性空洞型肺转移瘤的CT征象分析

目的探讨鳞癌源性空洞型肺转移瘤(cavitary pulmonary metastasis,CPM)与腺癌源性CPM在CT表现上的差异。方法回顾分析病理证实的13例61枚鳞癌源性CPM和22例60枚腺癌源性CPM,分析其CT表现。结果鳞癌CPM中有泡样空洞13枚,不规则空洞9枚,囊样空洞26枚,小环形空洞13枚。腺癌CPM有泡样空洞21枚,不规则空洞21枚和小环形空洞18枚,未见囊样空洞。57枚CPM的空洞壁厚度均匀,包括鳞癌39枚、腺癌18枚。22枚鳞癌和42枚腺癌共64枚CPM的洞壁厚度不均匀。鳞癌和腺癌CPM在部位、瘤灶大小、空洞壁厚度上无差异,囊样空洞多见于鳞癌,鳞癌空洞中壁厚度均匀者较多,腺癌与此相反,这一差异具有显著性。结论鳞癌CPM和腺癌CPM在CT表现上各有一定特征,可能有助于推测CPM的原发灶病理类型。

Comparative CT study on cavitary pulmonary metastases from squamous cell carcinoma and adenocarcinoma

Objective To explore the difference of CT features of cavitary pulmonary metastases(CPM)from squamous cell carcinoma(SCCCPM)and CPM from adenocarcinoma(ACCPM).Methods CT findings of 61 CPM nodules in 13 patients with SCCCPM and 60 CPM nodules in 22 patients with ACCPM were retrospectively analyzed.Results SCCCPM presented as bubble(n=13),irregular(n=9),cystic(n=26) or small circular(n=13) cavities.ACCPM presented as bubble(n=21),irregular(n=21) or small circular(n=18) cavities.No cystic cavity was found in ACCPM.The thickness of cavity wall was even in 57 CPM including 39 SCCCPM and 18 ACCPM.Of the 64 CPM with uneven cavity wall thickness,22 were SCCCPM and 42 were ACCPM.Between SCCCPM and ACCPM,no statistically significant difference was found in the site,size and cavity wall thickness of CPM,cystic cavity and even cavity wall thickness were found much more in SCCCPM than ACCPM,which has statistically significant difference.Conclusion Both SCCCPM and ACCPM had their own CT characteristics which was likely to predict the histological type of primary malignancy of CPM.