Antineoplastic Combined Chemotherapy Protocols/therapeutic use; Breast Neoplasms/pathology; Breast Neoplasms/therapy; Carcinoma, Ductal, Breast/pathology; Carcinoma, Ductal, Breast/therapy; Chemotherapy, Adjuvant; Combined Modality Therapy; Cyclophosphamide/administration & dosage; Doxorubicin/administration & dosage; Female; Humans; In Situ Hybridization, Fluorescence; Leukemia, Myelogenous, Chronic, BCR-ABL Positive/pathology; Leukemia, Myelogenous, Chronic, BCR-ABL Positive/therapy; Mastectomy; Middle Aged; Neoplasms, Multiple Primary/pathology; Neoplasms, Multiple Primary/therapy; Piperazines/administration & dosage; Pyrimidines/administration & dosage; Radiotherapy; Reverse Transcriptase Polymerase Chain Reaction; Selective Estrogen Receptor Modulators/administration & dosage; Tamoxifen/administration & dosage; Taxoids/administration & dosage