I did have a repeat spot compression mammo and ultrasound it is benign have to wait 6 months why?

Need observation: Because does not have enough indication for a biopsy , some times will show very small area of abnormal tissue , may be in one view only , if otherwise normal radiologist will advise the surgeon to follow closely and repeat on that side in 6 months instead of waiting for the usual 1 year follow up study.

Standard procedure: Usually if an new spot is seen on screening mammogram, spot compression mammogram and us are recommended to get a better view of the area. If they are normal in apperance, we recommend repeat imaging in 6 months to make sure no change at that time. If the 6 months imaging is normal, usually they go back to yearly screening tests.

It depends: It depends on what was seen. If there is a nodule that is felt to be a fibroadenoma, these are benign (non-cancerous) and are often monitored with sonograms for a year or two. Calcium deposits can be watched, especially if you have other similar areas in the opposite breast. Otherwise, a biopsy would usually be recommended.

Code 3 mammogram: In a small percentage of mammograms, after appropriate workup with additional views and ultrasound, the findings cannot be clearly called benign, nor are they worrisome enough for biopsy. These mammograms are called "code 3". Code 1 & 2 are benign, and 4 & 5 are suspicious. If code 3, a 6 month followup evaluation (usually repeat mammogram and ultrasound of just 1 side) is an appropriate step.

It sounds like the: final diagnosis code was BIRADS 3, probably benign. This has a probability of cancer, in practice, of less than 1%. The usual recommendation for this is a 6 month follow up to make sure it is stable.