Planned and unplanned pregnancies in breast cancer survivors.

BACKGROUND: Nearly 20% of women presenting with breast cancer in the UK are of reproductive age. The aim of our study was to assess fertility outcome in relation to intent to conceive in patients who had completed breast cancer treatment. METHODS: Between July 2011 and December 2013, women, aged less than 43 years at the time of diagnosis, were asked during their follow-up in breast cancer clinic, to complete a questionnaire on intentions to conceive and pregnancy outcome. RESULTS: A total of 175 women completed the questionnaire at a median time of 6 years from time of diagnosis. Their median age at the time of diagnosis was 37 years and at the time of the survey was 43 years. At the time of the survey, 42% (72/175) had completed their family, 41% (72/175) reported that they would like to have children and 4% (7/175) did not wish to have children. Twenty-seven respondents had actively tried to conceive, and of those 13 (48%) had a live birth. There were 12 unintended pregnancies; the majority of which were terminated (58% (7/12)) with only 3 live births. Among those who did not wish to conceive, only 32% (36/111) reported using contraception. CONCLUSION: This is a retrospective study investigating menstrual function, contraceptive methods and fertility outcomes of young breast cancer survivors. This study highlights the need for healthcare professionals to provide long-term contraceptive advice to women who do not wish to conceive.

Prediction of therapy response in bone-predominant metastatic breast cancer: comparison of [18F] fluorodeoxyglucose and [18F]-fluoride PET/CT with whole-body MRI with diffusion-weighted imaging.

PURPOSE: To compare [18F]-fluorodeoxyglucose (FDG) and [18F]-sodium fluoride (NaF) positron emission tomography/computed tomography (PET/CT) with whole-body magnetic resonance with diffusion-weighted imaging (WB-MRI), for endocrine therapy response prediction at 8 weeks in bone-predominant metastatic breast cancer. PATIENTS AND METHODS: Thirty-one patients scheduled for endocrine therapy had up to five bone metastases measured [FDG, NaF PET/CT: maximum standardized uptake value (SUVmax); WB-MRI: median apparent diffusion coefficient (ADCmed)] at baseline and 8 weeks. To detect the flare phenomenon, a 12-week NaF PET/CT was also performed if 8-week SUVmax increased. A 25% parameter change differentiated imaging progressive disease (PD) from non-PD and was compared to a 24-week clinical reference standard and progression-free survival (PFS). RESULTS: Twenty-two patients (median age, 58.6 years, range, 40-79 years) completing baseline and 8-week imaging were included in the final analysis. Per-patient % change in NaF SUVmax predicted 24-week clinical PD with sensitivity, specificity and accuracy of 60, 73.3, and 70%, respectively. For FDG SUVmax the results were 0, 100, and 76.2% and for ADCmed, 0, 100 and 72.2%, respectively. PFS < 24 weeks was associated with % change in SUVmax (NaF: 41.7 vs. 0.7%, p = 0.039; FDG: - 4.8 vs. - 28.6%, p = 0.005) but not ADCmed (- 0.5 vs. 10.1%, p = 0.098). Interlesional response heterogeneity occurred in all modalities and NaF flare occurred in seven patients. CONCLUSIONS: FDG PET/CT and WB-MRI best predicted clinical non-PD and both FDG and NaF PET/CT predicted PFS < 24 weeks. Lesional response heterogeneity occurs with all modalities and flare is common with NaF PET/CT.