乳腺癌report, 請各位專家和前輩提建議

Biopsy Report: right breast

ER + (strong)
PR + （weak）
Her2 -

right breast: the mass is irregular margins and strongly enhances kinetics.

size: 2.0 x 1.5 x 1.5. No associated chest wall invasion.

left breast: there are patchy areas of progressive enhancement.geographic and non-masslike. microcalcification.

Biopsy Report: left breast (2nd biopsy)

Atypical ductal hyperplasia and Fibroadenomatous changes.

the focal area showing a solid and cribriform pattern . 1.6mm

Doctor's suggestion: mastectomy and sentinel lymph node biopsy for right breast and armpit, and during the surgery, take out more tissue at the suspicious areas of the left breast and do biopsy again.

Question:

proliferation rate 90% (high)MRI Report: for both breasts

從這些結果看，情況很嚴重嗎？是常見的cancer type嗎?

就目前的情況下，這個醫生的建議是最好的選擇嗎？

感謝大家提建議。