How do you usually treat atypical hyperplasia in a breast biopsy?

Close observation: When atypical hyperplasia is found at the time of a nonsurgical needle biopsy, it is often recommended to remove a little more tissue with a surgical biopsy to be certain that this did not miss a cancer. Assuming only atypia is seen, this is not a pre-cancerous condition, but rather a marker for a 2-4 fold increased risk for breast cancer. Therefore, careful follow-up is recommended.

Depends .: If the biopsy was a needle/core biopsy, most would surgically excise. There is a small (approximately 20%) chance of finding dcis at excision. Once excised, most patients are considered 'high risk'. These patients may benefit from chemoprevention (tamoxifen) and/or yearly mri. To further assess one's risk, they should see a breast professional.