My cancer was completely over sighted by radiation technicians . I had yearly ultrasound order on entire breasts. However technician only focused on one benign nodule and year after year the report was good. If the breast cancer surgeon was responsible, she would “correct” it and had technician gave me entire breast scan. Three years later (missed three entire breast scan because technician didn’t follow doctors order), when they finally found cancer because my chest bone was so swollen and painful, cancer already spread to lymph node and I had to do mastectomy and lymph node dissection and chemo.