Breast Imaging Two Years Post-Breast Conserving Therapy (Bct): Do More Frequent Mammograms (Mmg) Yield Benefits?
JOURNAL OF CLINICAL ONCOLOGY(2014)
摘要
9602 Background: High level evidence defining the optimal timing and frequency of MMG surveillance (6-monthly vs. annually) after breast-conserving therapy (BCT) is lacking. The purpose of this retrospective study was to determine the value of 6-monthly MMG in detecting cancer events after BCT. Methods: AJCC stage 0 to IIIC breast cancer and ductal carcinoma in-situ (DCIS) patients (n=492) treated with BCT from 2005-2009 who had two years of surveillance MMG were selected. MMG-associated events, additional imaging and biopsies (Bx) triggered by abnormal mammograms, and tumor recurrences were analyzed by time intervals. A 6-monthly MMG group (n=400) was compared with annual MMG group (n=92). MMG yield was defined as MMG detected events divided by total MMG. We analyzed results using simple frequencies and Fisher’s exact test. Results: Of 1591 total MMG, 144 were pre-radiation; 69 additional imaging tests (38 ultrasounds, 22 magnification MMG and 9 MRIs) were performed. 1407 and 182 MMGs were performed in 6...
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