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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 retrospectively analyze the features of MSCT images in 31 cases of parotid basementoma confirmed by postoperative pathology and to explore the diagnostic value of MSCT in parotid basal cell tumors. Methods: MSCT data of 31 cases of parotid basementoma confirmed by pathology were collected. All patients underwent CT scan and double-phase enhanced scan before operation. Evaluation of tumor plain and enhanced features, including the degree and manner of enhancement. Results: basal cell tumor showed unequal uniform density nodules, showing obvious cystic area; increased dynamic and venous phase were significantly enhanced arterial phase CT value increased with the mixed tumor were significantly different, with a statistically significant difference (P <0.01). There was no significant difference between adenolymphoma and adenolymphoma (P> 0.05). The increase of venous phase CT value was statistically different from adenolymphoma and mixed tumor (P <0.01). CONCLUSIONS: Parotid basaltoma has the characteristics of benign tumor. The CT enhancement features are more persistent enhancement in arterial and venous phase accompanied by significant cystic change.