硬化性肺泡细胞瘤与错构瘤CT征象对比分析

Comparison of CT feature in identification of pulmonary sclerosing pneumocytoma and hamartoma

目的探讨硬化性肺泡细胞瘤与错构瘤的CT影像学差异,以提高诊断正确率。方法选取经病理证实的12例硬化性肺泡细胞瘤及15例错构瘤患者资料,均行胸部CT平扫+增强检查,对比分析2组病例临床及影像学特点。结果2组病例在平均年龄、发病部位及病灶最大径方面差异无统计学意义(P>0.05);2组病例均无明显分叶、毛刺、血管聚集征及远处淋巴结肿大,差异无统计学意义(P>0.05)。2组病例均存在瘤灶内钙化及血管贴边征,差异无统计学意义(P>0.05);4例错构瘤瘤灶可见脂肪成分,3例硬化性肺泡细胞瘤瘤灶内可见囊变,差异有统计学意义(P<0.05);增强扫描后,错构瘤CT值增幅(18.6±5.7)HU,硬化性肺泡细胞瘤CT值增幅(55.8±23.1)HU,2组比较差异有统计学意义(P<0.05)。结论硬化性肺泡细胞瘤具有良性肿瘤一般性特征,其中病灶内囊变,增强扫描后强化明显,具有一定特征性。

Objective To explore the CT feature difference betweenpulmonary sclerosing pneumocytoma and hamartoma and to improve the diagnostic accuracy.Methods 12 cases of pulmonary sclerosing pneumocytomas and 15 cases of hamartomasconfirmed bypathology were analyzed retrospectively.All cases were perfromed chest routine and enhanced Scan.The data of clinical and imaging were compared.Results There were not significant differencesin average age and maximum diameter of tumor(P>0.05).There were not significant differences in lobulation,thorn,vessel convergence,lymphadenopathy,calcification and vascular welt sign(P>0.05).Fat content was observed in 4 cases hamartomas,cystic changes were observed in 3 cases pulmonary sclerosing pneumocytoma(P>0.05).After the enhanced,the CT value of hamartoma increased by(18.6±5.7)HU,compared to(55.8±23.1)HU pulmonary sclerosing pneumocytoma(P<0.05).Conclusion Pulmonary sclerosing pneumocytoma has the general characteristics of benign tumors,in which cystic change and the significan enhancement have certain characteristics.