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Table 1 Patients and tumor characteristics (Abbreviation: ER = estrogen receptor; PR = progesteron receptor)

From: Higher toxicity with 42 Gy in 10 fractions as a total dose for 3D-conformal accelerated partial breast irradiation: results from a dose escalation phase II trial

  42 Gy step (n = 17) 40 Gy step (n = 31)
Median age (years)(min-max) 67 (52–76) 65 (53–79)
Median tumor size (mm) (min-max) 10 (4–20) 11 (5–20)
Histology
Invasive ductal carcinoma (IDC) 82% 90%
Mucinous/tubular/other invasive carcinoma 6% -
Ductal Carcinoma In Situ (DCIS) 12% 10%
Nodal status
pN0 100% 100%
Scarff & Bloom histology grade
1 44% 64%
2 38% 32%
3 13% 4%
ER status
Positive 100% 100%
PR status (+)
Positive 69% 77%
Negative 31% 23%
Her2 status
Negative 100% 100%