Hi @katnotcat, on December 2022 I was diagnosed with ALH in my right breast. I was 50 at the time with very dense tissue and family history(sister with DCIS at the age of 36, she did double mastectomy). My breast surgeon did a excisional biopsy. I had Genetic Test in January results negative. I am in a close surveillance monitoring with alternating MRI’s and Dx mammograms every 6 months. I went to an oncologist that suggested to take Tamoxifen, I decided not to take them because all the side effects and just to keep monitoring with MRI’s and Mammograms. On June I had my MRI and was ok, but in July I had a follow-up mammogram after surgery and they found more clusters of microcalcifications in the same breast. They did a biopsy in two different areas. Both of them with ALH. The doctor told me that I don’t need surgery. I have another Dx mammogram in December 5th and appointment with the Nurse Practitioner the week after.