目的 探讨磁共振成像(MRI)与 钼靶X线对乳腺癌术前瘤体体积及病理分 型的评估价值。方法 选择医院2016年4 月-2018年4月收治的乳腺癌患者120例， 所有患者均经手术病理证实为乳腺癌。术 前均接受乳腺MRI、钼靶X线检查，比较两 种检查方式的检出率、瘤体体积及病理分 型情况。结果 MRI在乳腺癌的检出率高于 钼靶X线检查(P＜0.05)，对瘤体体积评估 与病理结果的一致性高于钼靶X线检查(P ＜0.05)，对于导管原位癌、浸润性小叶 癌及粘液腺癌病理分型的符合率高于钼靶 X线检查(P＜0.05)。结论 MRI在术前乳腺 癌的检出率高于钼靶X线，病例分型也较 准确，对瘤体体积的评估与病理结果一致 性较高。

Objective To explore the evaluated value of magnetic resonance imaging (MRI) and mammography in the preoperative tumor volume and pathological types of breast cancer. Methods 120 cases of patients with breast cancer who were admitted to the hospital from April 2016 to April 2018 were selected. All patients were confirmed to be breast cancer by surgical pathology. All patients were given breast MRI and mammography before operation. The detection rate, tumor volume and pathological types of the two examination methods were compared. Results The detection rate of breast cancer by MRI was higher than that by mammography (P<0.05), and the consistency of tumor volume assessment and pathological results was higher than that of mammography (P<0.05), and the coincidence rates of pathological types of ductal carcinoma in situ, invasive lobular carcinoma and mucinous adenocarcinoma were higher than those by mammography (P<0.05). Conclusion The detection rate of preoperative breast cancer by MRI is higher than that by mammography, and MRI has accurate pathological types, and has high consistency of tumor volume assessment and pathological results.