Intensity modulated radiation therapy with simultaneous integrated boost in early breast cancer irradiation. Report of feasibility and preliminary toxicity

Breast cancer; IMRT; SIB; Toxicity; Adult; Aged; Aged, 80 and over; Breast Neoplasms; Carcinoma, Ductal, Breast; Carcinoma, Lobular; Esthetics; Feasibility Studies; Female; Follow-Up Studies; Humans; Mastectomy, Segmental; Middle Aged; Radiodermatitis; Radiotherapy Dosage; Radiotherapy, Adjuvant; Severity of Illness Index; Radiotherapy, Intensity-Modulated; Oncology; Radiology, Nuclear Medicine and Imaging