Is a 6 month breast ultrasound follow up after biopsy adequate to look for changes in the lesion? would changes have shown?

6 to 12 months: Most centers recommend a follow up u/s 6 to 12 months after a breast biopsy which was negative for malignancy. Some experts favor 12 month follow up. I feel it should be a case by case decision between the breast surgeon , pathologist and radiologists with the breast surgeon being the final adviser for the patient. Follow up sooner than 6 months would be unusual.