Is There a Role for Postmastectomy Radiation Therapy in Ductal Carcinoma In Situ?

Table 1

Patient characteristics.

Clinical factor	Distribution (𝑛=211)
Age at diagnosis (years)
(i) <40	20 (9.5%)
(ii) 41–50	86 (40.8%)
(iii) >50	105 (49.7%)
Race
(i) White	123 (58.3%)
(ii) Black	30 (14.2%)
(iii) Others	58 (27.5%)
Primary method of diagnosis
(i) Breast Exam	48 (22.7%)
(ii) Mammogram	151 (71.5%)
(iii) Other imaging	12 (5.7 %)
Nuclear Grade
(i) Grade 1	22 (10.4%)
(ii) Grade 2	97 (45.9%)
(iii) Grade 3	92 (43.6%)
Final margins
(i) Negative	187 (88.6%)
(ii) Close (<1 mm)/Positive	19 (9%)/5 (2.4%)
Receptor status
(i) ER Positive	42 (19.9%)
(ii) ER Negative	107 (50.7%)
(iii) Unknown	62 (29.4% )