卵巢未成熟性畸胎瘤与成熟性畸胎瘤的CT定量与征象分析

CT Quantification and Sign Analysis of Ovarian Immature Teratoma and Mature Teratoma

目的探讨CT对于卵巢未成熟性畸胎瘤(IT)与成熟性畸胎瘤(MT)的鉴别诊断价值。方法回顾性分析经手术病理证实的7例IT和14例MT患者的CT资料,观察并测量两种肿瘤的部位、大小、形态学特征、密度以及强化程度,结果与病理对照。IT和MT大小、各期密度的比较采用两独立样本t检验,CT征象的比较采用χ^2检验。结果IT的软组织成分呈明显"网格状"强化,并较MT表现出延迟强化的特点,差异有统计学意义(P<0.05)。IT的脂肪及钙化成分多分布在病灶中央,并散在分布于软组织成分内,而MT的脂肪及钙化成分多分布于病灶边缘(P<0.05)。IT病灶内钙化灶数量多于MT(P<0.05)。结论IT与MT在CT强化特点及形态学征象上具有一些显著的差异点,有助于两者的术前鉴别。

Objective To investigate the value of CT in the differential diagnosis of ovarian immature teratoma(IT)and mature teratoma(MT).Methods The CT data of 7 patients with immature teratoma and 14 patients with mature ter-atoma confirmed by surgery and pathology were retrospectively analyzed,and the location,size,morphological characteris-tic density and degree of enhancement of the two tumors were observed and measured.The results were compared with pa-thology.The comparison of IT and MT size and density of each period uses two independent samples t test,and the compar-ison of CT signs usesχ^2 test.Results The soft tissue components of IT showed obvious grid-like enhancement and showed delayed enhancement compared with MT.The difference was statistically significant(P<0.05).The fat and calci-fication components of IT were mostly distributed in the center of the lesion and scattered in the soft tissue components,while the fat and calcification components of MT were mostly distributed on the edge of the lesion(P<0.05).The number of calcifications in IT lesions was higher than that in MT(P<0.05).Conclusion IT and MT have some significant differences in CT enhancement features and signs,which is helpful for preoperative identification.