Fig. 6

Area of the skin receiving a total dose of 40 Gy (S). The median S₄₀ values in the Grades 1 and 2 groups were 0 (range, 0–102) and 57 (range, 25–196) cm², respectively (P < 0.05). The cut-off value was 25 cm² (sensitivity = 100%, specificity = 80%)