腮腺基底细胞瘤的MSCT诊断价值

The value of MSCT in diagnosis of the parotid basal cell tumor

目的:回顾性分析31例经术后病理证实的腮腺基底细胞瘤MSCT扫描影像特征,探讨MSCT在腮腺基底细胞瘤的影像诊断价值。方法:搜集31例经手术病理证实的腮腺基底细胞瘤的MSCT检查资料,所有病例术前均进行CT平扫和双期增强扫描。评价肿瘤平扫和增强特征,包括增强程度和方式。结果:基底细胞瘤平扫呈不均匀的等密度结节,可见比较明显的囊变区;增强动、静脉期均显著强化,动脉期CT值增加幅度与混合瘤有显著差别,具有统计学差异(P<0.01),与腺淋巴瘤比较没有显著差别(P>0.05),静脉期CT值增加幅度与腺淋巴瘤、混合瘤比较有统计学差异(P<0.01)。结论:腮腺基底细胞瘤具备良性肿瘤的特征,CT增强特征为动脉期和静脉期呈较显著的持续性强化,伴有显著的囊变。

Objective：To review MSCT imaging features of 31 cases of basal cell tumor and explore its diagnostic value of MSCT.Methods：31 patients with pathologically confirmed basal cell tumor underwent the preoperative MSCT plain-scan and dual-phases scan.The change of CT value and enhancement patterns were assessed in these tumors.Results：Basal cell tumors showed isodense nodule with significant cystic area on CT plain-scan.At dual-phase scan,basal cell tumors showed a pattern of persistent strong enhancement with characteristic cystic areas.At arterial phase,the increase of CT value was the highest for basal cell tumors,which was significantly statistical difference with pleomorphic adenoma（P0.01）.At veouse phase,the increase of CT value was statistically different between basal cell tumor and other two histopathologic types（P0.05）.Conclusions：Basal cell tumors showed hetergenouse isodense nodule on CT plain-scan,which showed a pattern of persistent strong enhancement with characteristic cystic areas.