Imaging for early stage breast cancer

RTOG 9804: a prospective randomized trial for good-risk ductal carcinoma in situ comparing radiotherapy with observation

(Mc Cormick B et al, JCO 2015)

At 7.2 years, risk of IBTR was 6.7% in the observation arm compared to 0.9% in WBI arm

Selection criteria:

Screen-detected DCIS Low to intermediate nuclear grade ≤ 2.5 cm size margins negative at ≥ 3 mm