乳腺腺病的磁共振影像学特点

MRI Features of Breast Adenosis

目的探讨乳腺腺病的磁共振影像学特点并分析误诊原因。方法回顾性分析经手术病理证实的20例乳腺腺病患者的MRI影像资料,随机选取同期经手术病理证实的20例乳腺癌病例作为对照组。结果乳腺腺病的MRI形态学和时间-信号强度曲线类型与乳腺癌存在重叠。乳腺腺病组早期强化率为(82.95±28.71)%,乳腺癌组早期强化率为(103.93±32.47)%,两者间差异无统计学意义(Z=-1.92,P=0.055)。乳腺腺病组平均表观扩散系数(ADC)值为(1.40±0.15)×10-3mm2/s,乳腺癌组平均ADC值为(1.06±0.10)×10-3mm2/s,两组间差异有统计学意义(Z=-5.28,P=0.000)。结论乳腺腺病的形态学和动态增强表现与乳腺癌存在重叠,易误诊,扩散加权成像在定性诊断中有较大优势,可提高乳腺MRI的诊断价值。

Objective To investigate the MRI features of breast adenosis, and to improve the diagnosis. Methods MRI data of 20 cases with breast adenosis confirmed by surgery and pathology were retrospectively analyzed. 20 cases with breast cancer confirmed by surgery and pathology were taken randomly as control group. Results Overlapping morphology and TIC occurred in breast adenosis and cancer cases. The rate of early enhancement in breast adenosis group and breast cancer group was （ 82.95 ±28.71 ） % and （ 103.93 ±32.47） %, respectively （Z = - 1.92, P = 0. 055 ）. The mean ADC value in breast adenosis group and breast cancer group was （ 1.40 ± 0.15 ） × 10 ^-3 mmE/s and （ 1.06 ± 0.10） × 10-3 mm2/ s, respectively（Z = -5.28 ,P = 0. 000）. Conclusion Overlapping morphological and dynamic MRI features may occur in some breast adenosis and cancer cases, which may induce misdiagnosis. DWI has merits in the qualitative diagnosis and may increase the diagnostic accurace of MRI.