The dosimetric impact of axillary nodes contouring variability in breast cancer radiotherapy: an AIRO multi-institutional study

Author(s):  
Maria Cristina Leonardi ◽  
Matteo Pepa ◽  
Rosa Luraschi ◽  
Sabrina Vigorito ◽  
Samantha Dicuonzo ◽  
...  
2020 ◽  
Vol 152 ◽  
pp. S795-S796
Author(s):  
D. Hernandez ◽  
M.S. Talaya ◽  
C. Anson ◽  
P. Castro ◽  
M. Roch ◽  
...  

2020 ◽  
Vol 152 ◽  
pp. S77-S78
Author(s):  
M. Verhoeven ◽  
M. Sangen van der ◽  
C. Hurkmans ◽  
L. Boersma ◽  
K. Verhoeven ◽  
...  

2017 ◽  
Vol 35 (15) ◽  
pp. 1641-1649 ◽  
Author(s):  
Carolyn Taylor ◽  
Candace Correa ◽  
Frances K. Duane ◽  
Marianne C. Aznar ◽  
Stewart J. Anderson ◽  
...  

Purpose Radiotherapy reduces the absolute risk of breast cancer mortality by a few percentage points in suitable women but can cause a second cancer or heart disease decades later. We estimated the absolute long-term risks of modern breast cancer radiotherapy. Methods First, a systematic literature review was performed of lung and heart doses in breast cancer regimens published during 2010 to 2015. Second, individual patient data meta-analyses of 40,781 women randomly assigned to breast cancer radiotherapy versus no radiotherapy in 75 trials yielded rate ratios (RRs) for second primary cancers and cause-specific mortality and excess RRs (ERRs) per Gy for incident lung cancer and cardiac mortality. Smoking status was unavailable. Third, the lung or heart ERRs per Gy in the trials and the 2010 to 2015 doses were combined and applied to current smoker and nonsmoker lung cancer and cardiac mortality rates in population-based data. Results Average doses from 647 regimens published during 2010 to 2015 were 5.7 Gy for whole lung and 4.4 Gy for whole heart. The median year of irradiation was 2010 (interquartile range [IQR], 2008 to 2011). Meta-analyses yielded lung cancer incidence ≥ 10 years after radiotherapy RR of 2.10 (95% CI, 1.48 to 2.98; P < .001) on the basis of 134 cancers, indicating 0.11 (95% CI, 0.05 to 0.20) ERR per Gy whole-lung dose. For cardiac mortality, RR was 1.30 (95% CI, 1.15 to 1.46; P < .001) on the basis of 1,253 cardiac deaths. Detailed analyses indicated 0.04 (95% CI, 0.02 to 0.06) ERR per Gy whole-heart dose. Estimated absolute risks from modern radiotherapy were as follows: lung cancer, approximately 4% for long-term continuing smokers and 0.3% for nonsmokers; and cardiac mortality, approximately 1% for smokers and 0.3% for nonsmokers. Conclusion For long-term smokers, the absolute risks of modern radiotherapy may outweigh the benefits, yet for most nonsmokers (and ex-smokers), the benefits of radiotherapy far outweigh the risks. Hence, smoking can determine the net effect of radiotherapy on mortality, but smoking cessation substantially reduces radiotherapy risk.


2017 ◽  
Vol 89 (1-2) ◽  
pp. 125-127
Author(s):  
Aaron Lim ◽  
Corina Preda ◽  
Jason Stone ◽  
Andreas L. Lambrianides

2015 ◽  
Vol 88 (1055) ◽  
pp. 20150414 ◽  
Author(s):  
Benoîte Méry ◽  
Alexis Vallard ◽  
Jane-Chloé Trone ◽  
Cécile Pacaut ◽  
Jean-Baptiste Guy ◽  
...  

2017 ◽  
Vol 08 (06) ◽  
Author(s):  
Ibrahim Duhaini ◽  
Fatima Hijazi ◽  
Eva Sabbah ◽  
Saad Ayoubi ◽  
Sadek Nehmeh ◽  
...  

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