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Table 1 Baseline patient, tumor and treatment characteristics for all patients (n = 50)

From: Evaluation of a new predictor of heart and left anterior descending artery dose in patients treated with adjuvant radiotherapy to the left breast

Characteristic

All Patients

Age – mean ± SD

53.3 ± 12.0

Breast Volume (cm3) – mean ± SD

630 ± 232

Tumor location in the breast (quadrants)a – n (%)

 Superior

25 (66)

 Inferior

7 (18)

 Lateral

23 (61)

 Medial

6 (16)

Tumor stage – n (%)

 T1

36 (74)

 T2

7 (14)

 T3

2 (4)

 Tis

4 (8)

Node stage – n (%)

 N0

45 (90)

 NX

5 (10)

Nodal investigation – n (%)

 None

5 (10)

 Sentinel

34 (68)

 Axillary

11 (22)

Mean Heart Dose (Gy) – mean ± SD

2.3 ± 0.8

Mean Heart Dose (Gy) – n (%)

 < 1.7 Gy

10 (20)

 ≥ 1.7 Gy

40 (80)

Heart Volume (cm3) – mean ± SD

564 ± 87.2

Heart V25 Gy (cm3) – mean ± SD

10.4 ± 9.7

Heart V25 Gy (cm3) – n (%)

 < 10 cm3

27 (54)

 ≥ 10 cm3

23 (46)

Maximum LAD Dose (Gy) – mean ± SD

37.5 ± 15.7

  1. aColumn totals exceed 100% as some tumors were located in multiple breast quadrants;
  2. Tis Tumour in situ, LAD Left anterior descending coronary artery, N Number