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Table 1 Baseline demographic and radiotherapy treatment parameters for left-sided breast cancer patients by treatment cohort

From: Cardiac dose reduction with deep inspiration breath hold for left-sided breast cancer radiotherapy patients with and without regional nodal irradiation

Characteristics WBRT
(n = 11) (%)
B/CWRT + RNI
(n = 9) (%)
Median age (years), range 47 (39–54) 51 (34–69)
AJCC Stage   
 DCIS 3 (27) 0 (0)
 I 5 (45) 0 (0)
 II 3 (27) 5 (55)
 III 0 (0) 4 (44)
ER/PR positive (for invasive disease) 7/8 (88) 7/9 (78)
HER 2+ (for invasive disease) 2/8 (25) 2/9 (22)
Surgery   
 Breast conserving 11 (100) 5 (56)
 Mastectomy 0 (0) 4 (44)
RT boost to seroma 4 (36) 2 (22)
RT to internal mammary nodes 0 (0) 9 (100)
Breast/Chest wall RT dose   
(Gy/# fraction)   
 40/16 0 (0) 2 (22)
 42.5/16 10 (91) 4 (44)
 45/25 0 (0) 1 (11)
 50/25 1 (9) 2 (22)
Supraclavicular nodal RT dose   
(Gy/# fraction)   
 37.5/16 N/A 6 (67)
 45/25 N/A 3 (33)