I have had mammo and ultra sound because of history of ruptured implants since 1994. The silicon went under arms into organs. I had mris too and stopped 3 years ago with mris because the dye is not good for you. In 22 I had a mammo and ultra sound in Dec. Said negative for cancer. In June I felt lump in left breast 12:30 6cm from nipple. Had mammo and rechecked ultra sound. Mammo negative for cancer. Ultra sound initially did not show cancer. I pointed to lump and they found ìt to be cancer. The mammo did not see 11mm cancer at 12:30 and 6cm from nipple. I had biopsy and mri which showed 9mm of IDC. When they did surgery to remove it was 13mm. I asked if grown my doctor said no it was like cobwebs. It was not in my lymph nodes nor in my margins. In April my doctor wants me to have a mammo and ultra sound to check my breasts. Since the cobweb cancer I had does not show up on mammo and it was missed on ultrasound in Dec. 2022, probably, I am insisting on an mri and ultrasound and making sure the ultra sound goes over entire breast. I was so upset because I have always thought the mammo would catch breast cancer but apparently not the cobweb type I had. I am lucky I felt the lump and insisted on a mammo and ultrasound. You have to be your own advocate. I am having an mri in April and detailed ultra sound over every inch of my breasts because I do not trust just having a mammo.