Department of Radiology, Brigham and Women's Hospital, Dana Farber Cancer Institute, 75 Francis St, Boston, MA 02115, USA.
Radiographics. 2012 Jan-Feb;32(1):219-34. doi: 10.1148/rg.321115016.
Dynamic contrast material-enhanced magnetic resonance (MR) imaging has emerged as a valuable tool in evaluation of women who have undergone lumpectomy and whole-breast radiation therapy for breast cancer. Early diagnosis of local recurrence by means of close clinical and imaging follow-up is an important component of a breast-conserving strategy, as it may improve survival. In the post-breast conservation therapy (BCT) breast, resolving edema, fat necrosis, a small focal area of non-masslike enhancement (NMLE), and thin linear NMLE at the lumpectomy site can all be expected findings. In contrast, masslike enhancement or NMLE of ductal or segmental distribution can indicate recurrence. Therefore, at MR imaging of the post-BCT breast, it is important to identify lesions that are benign or appropriate for short-interval imaging surveillance to minimize unnecessary intervention, as well as to discern suspicious lesions and optimize the diagnosis of recurrence.
动态对比增强磁共振成像（MR）已成为评估接受保乳手术和全乳放射治疗的乳腺癌女性的一种有价值的工具。通过密切的临床和影像学随访，早期诊断局部复发是保乳策略的重要组成部分，因为这可能提高生存率。在保乳治疗（BCT）后乳房中，消退性水肿、脂肪坏死、小的局灶性非肿块样强化（NMLE）和保乳术部位的细线状 NMLE 都可以是预期的发现。相比之下，肿块样强化或导管样或节段性分布的 NMLE 可能提示复发。因此，在 BCT 后乳房的 MR 成像中，重要的是识别良性病变或适合短期间隔影像学监测的病变，以最小化不必要的干预，以及识别可疑病变并优化复发的诊断。
