Stage 0

There is no evidence of cancer cells breaking out of the part of the breast in which they started or of getting through to or invading neighboring normal tissue

Total mastectomy (radiation after mastectomy rarely needed)

OR

Lumpectomy + radiation

OR

Lumpectomy alone (with or without internal radiation -- only for a limited subset of women)

None required

None required

Used for people with hormone-receptor-positive cancer

No current role

Does not apply