I had a double mastectomy for stage 1, 7 mm found on routine mammogram, ER/PR+ HER2-, BRCA2+ 11 years ago. Follow-up was a breast MRI at 1 year, ultrasound every 3 months year one then every 6 mo years 2-5, then once a year. I was told they can never get 100% of the breast tissue. About 2% remains. I had a 3-5% chance of recurrence. I had a 1.2 cm recurrence in my chest wall, Ki-67 50%, at 7 years. I felt the lump myself two days before my annual ultrasound. Had tumor resection with a positive margin, 37 radiation treatments, now on Letrozole and Kisqali for 3.5 years so far and forever so long as they work. Follow-up is CT scans of chest, abdomen and pelvis every 6 months. It was every 3 months the first year. Prayers for all.