Being sent for diagnostic mammo, u/s and biopsy, for 8mm x 6mm mass at 9 o'clock position left breast. should i be worried?

The probability: of malignancy is based on various mammographic/sonographic characteristics, and is the basis for the BIRADS code at the bottom of the report. Since biopsy was recommended, it is probably at least a BIRADS 4A(low suspicion,3-10% chance of maliganancy) up to BIRADS 5(>95% chance). Can't say much more without further details or images. About 75% of all biopsies turn out benign.

Biopsy breast mass: if there is a family history of breast cancer there is a higher likely hood of pos biopsy----or if you have had a lot of radiation exposure-----otherwise less likely. Unfortunately you will have to waite an see----you do need the study to find out. i wish you well in your health