不同分子亚型乳腺癌MRI特征分析

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Abstract Objective: To explore the MRI features of different molecular subtypes of breast cancer. Materials and Methods: Pre-operation breast MR images of 139 patients were retrospectively investigated concerning strengthen way, morphological, internal and marginal characteristics of mass like enhancement, time-signal intensity curve types and accompanied signs. Meanwhile, expression levels of immunohistochemistry indices including ER, PR, HER-2 and Ki-67 were recorded, and all subjects were assigned to different groups based on their molecular subtypes: Luminal A, Luminal B, HER-2 positive and TNBC. Differences in MRI characteristics were compared and tested with χ-square test, relevance between MRI characters and molecular subtyping was analyzed by crosstab analysis. Results: N of each group: Luminal A(32), Luminal B(76), HER-2 positive(14), TNBC(17). A total of 119 were mass like enhancement, whereas 20 were non-mass like enhancement. Among the mass like enhancement, the molecular subtype was slight correlated with margin(C=0.360, P=0.008) and time-signal intensity curve type(Ｃ=0.318, P=0.019）, moderately correlated with internal enhancement characteristics(C=0.442, P=0.001), whereas morphology and accompanied signs were not relevant to molecular subtype(C=0.065, P=0.791). Conclusions: Different subtypes of breast cancer showed distinct MRI manifestations, molecular subtyping was partially relevant to MRI characters. Thus, pre- operation MRI is helpful in preliminary determination of prognosis and preliminary preparation of therapeutic plans.

Key words： Breast neoplasms Magnetic resonance imaging

Received: 07 September 2016

PACS:	Ｒ737.9
	Ｒ445.2

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	SUN Shuang-yan
	YANG Chang-liang
	HUANG Zhi-cheng
	NAN Ying-ji
	SUI Chang-ping
	ZHAO Ji-hong

Cite this article:

SUN Shuang-yan,YANG Chang-liang,HUANG Zhi-cheng, et al. MRI features of different molecular subtypes of breast cancer[J]. JOURNAL OF CHINA MEDICAL IMAGING, 2017, 28(5): 327-330.

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http://www.jccmi.com.cn/EN/ OR http://www.jccmi.com.cn/EN/Y2017/V28/I5/327

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