Figure 1.

Differences in adjuvant radiation therapy between MBC and FBC patients The left bar indicates the MBC group, and the right bar indicates the FBC group. Among stage 0–III postsurgical patients who had a tumor size ≥ 5 cm or the number of positive axillary lymph nodes ≥ 4 after mastectomy, or who underwent lumpectomy for adjuvant radiation therapy (N = 52,894), MBC patients received adjuvant radiation therapy less frequently than FBC patients (33.3% vs 61.6%; P < .001). MBC; male breast cancer, FBC; female breast cancer