MKI67 and neoplasm: Pre-score (Clinicopathologic Model) = −4.30 + 1.93 × US (Negative: 0, Positive: 1) + 2.01 × PE (Negative: 0, Positive: 1) + 0.74 × Tumor Location (Central: 0, Medial: 2, Lateral: 3, Diffuse: 4) + 0.02 × Ki-67.