【摘要】 目的 总结分析乳腺浸润性筛状癌MRI的影像学特征，提高对本病的MRI诊断水平。方法 收集在本院做MRI检查并经手术病理证实的10例乳腺浸润性筛状癌，回顾性分析其影像学征象。结果 10例乳腺浸润性筛状癌MR表现为边界不清的肿块影，T₁WI以等信号为主，T₂WI以高信号为主，部分可见点状低信号。增强后病变呈不均匀强化，大多数病变强化中可见点状低信号。增强后病变内点状低信号可能是较为特征性表现。时间信号强度曲线呈平台型或流出型。5例伴有淋巴结转移，可能与孕激素受体（PR）阳性表达有关。结论 MRI在乳腺浸润性筛状癌的诊断有重要价值，并能提高影像医生对乳腺浸润性筛状癌的认识，帮助临床更加个性化治疗。更多还原

【Abstract】 Objective To analyze MRI features of invasive cribriform carcinoma of the breast, and to improve the diagnostic accuracy of the disease.Methods MRI of 10 cases with biopsy-proved invasive cribriform carcinoma of the breast in our hospital were analyzed retrospectively.Results 10 cases with invasive cribriform carcinoma of the breast showed unclear boundary.Lesions showed isointensity on T₁WI,and hyperintensity on T₂WI partially with point-like low signal intensity.After contrast administration, the lesions showed heterogeneous enhancement, most of which showed point-like low signal intensity in the lesions, which may be the characteristic manifestations of invasive cribriform carcinoma of the breast. The patterns of time-signal intensity curves were washout type and platform type.Five cases had lymph node metastasis, which may due to the overexpression of PR.Conclusion MRI plays an important role in the diagnosis of invasive cribriform carcinoma of the breast.There is a promising benefit of this radiation-free technique for selecting the optimal therapeutic regimen for this disease.更多还原