Mri showed no cancer but need to go for another mammogram and ultrasound in 6 months. why? doctors office wouldn't say why.

Follow up Testing: This is the standard of care in medicine. If something is too small to see on a scan and that something is suspicious enough then if it is an unwanted growth...Then growth very well may show up in other studies in a few months. This scanning on a schedule is the way medicine is often practiced.

Short-Term Follow-Up: I assume that the mammogram+/-ultrasound demonstrated a "probably-benign" abnormality, leading to the mri. While the MRI was normal, the mamm+/-ultrasound did show something; therefore, short-term follow up is the safest course to take. We classify this as a bi-rads 3 finding--about 98-99.5% of the time it's nothing. I hope this helps.