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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%