Hi. Stromal hyalinization indicates scarring, usually due to a benign tumor called a fibroadenoma.
There is no diagnostic test that is 100% fool-proof, but the good thing about mammograms is that they are known to have improved outcomes since 1990 , so we'll have to work within its limitations. A BI RADS 3 indicates that the odds of finding a malignancy is less than 2%. Recommending the follow-up is based on actual cases, including the follow-up periods. A lot of women receive these reports, if you follow the recommended annual mammography, there is a 50-50 chance that you'll get an abnormal mammogram and be asked for a repeat at a shorter time period. More than 90% of the time , these same women are asked to resume the previous schedule of annually. Aside from self-examination, you may also ask a doctor to examine you during the interim.
The lumpiness is pretty vague, perhaps its best you have this examined more so, if you feel a new lump.
Thanks for the information.