PMC

(a) The 5-year disease-free survival (DFS) was 85.7% (95% confidence interval [CI] 84.4–87.1%) for invasive lobular carcinoma (ILC) versus 83.5% (95% CI 83.1–84.0%) for invasive ductal carcinoma (IDC; P = 0.13). (b) The 5-year overall survival (OS) was 85.6% (95% CI 84.2–87.0%) for ILC and 84.1% (95% CI 83.7–84.6%) for IDC (P = 0.64).

The 5-year overall survival (OS) after the first recurrence was 32.8% (95% confidence interval [CI] 28.0–37.6%) for invasive lobular carcinoma (ILC) and 26.7% (95% CI 25.3–28.0) for invasive ductal carcinoma (IDC). The median survival after first recurrence was 22 months (range 0–115 months) for ILC versus 19 months (range 0–119 months) for IDC (P = 0.002).