Background parenchymal enhancement in breast MRIs of breast cancer patients: Impact on tumor size estimation

医学 乳腺癌 薄壁组织 乳房磁振造影 放射科 病态的 癌症 病变 磁共振成像 内科学 病理 乳腺摄影术
作者
Ji Eun Baek,Sung Hun Kim,Ahwon Lee
出处
期刊:European Journal of Radiology [Elsevier BV]
卷期号:83 (8): 1356-1362 被引量:32
标识
DOI:10.1016/j.ejrad.2014.05.007
摘要

To evaluate whether the degree of background parenchymal enhancement affects the accuracy of tumor size estimation based on breast MRI.Three hundred and twenty-two patients who had known breast cancer and underwent breast MRIs were recruited in our study. The total number of breast cancer cases was 339. All images were assessed retrospectively for the level of background parenchymal enhancement based on the BI-RADS criteria. Maximal lesion diameters were measured on the MRIs, and tumor types (mass vs. non-mass) were assessed. Tumor size differences between the MRI-based estimates and estimates based on pathological examinations were analyzed. The relationship between accuracy and tumor types and clinicopathologic features were also evaluated.The cases included minimal (47.5%), mild (28.9%), moderate (12.4%) and marked background parenchymal enhancement (11.2%). The tumors of patients with minimal or mild background parenchymal enhancement were more accurately estimated than those of patients with moderate or marked enhancement (72.1% vs. 56.8%; p=0.003). The tumors of women with mass type lesions were significantly more accurately estimated than those of the women with non-mass type lesions (81.6% vs. 28.6%; p<0.001). The tumor of women negative for HER2 was more accurately estimated than those of women positive for HER2 (72.2% vs. 51.6%; p=0.047).Moderate and marked background parenchymal enhancement is related to the inaccurate estimation of tumor size based on MRI. Non-mass type breast cancer and HER2-positive breast cancer are other factors that may cause inaccurate assessment of tumor size.
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