Little C

Understanding mastectomy

Removing the whole breast

Sources checked: September 2026

The short version

A mastectomy removes all the breast tissue. It may be recommended based on tumor size or location, whether radiation is a good option for you, genetic factors, or personal preference, and can sometimes be paired with reconstruction.

A mastectomy removes all of the breast tissue. There are several surgical approaches — your surgeon can explain which apply to your situation, including whether skin or the nipple can potentially be preserved if reconstruction is planned.

Choosing between a lumpectomy and a mastectomy is often a personal decision as much as a medical one, when both are medically reasonable options — your care team can help you weigh what matters most to you.

Questions you may want to ask

  • What type of mastectomy are you recommending, and why?

  • What reconstruction options would be available to me, and when would that conversation happen?

  • What does recovery typically look like?

RelatedUnderstanding breast reconstruction

Sources

Related articles

Understanding breast reconstructionReconstruction can rebuild breast shape using implants or your own tissue, and can happen right away or later.Understanding double mastectomyA double (bilateral) mastectomy removes both breasts, sometimes chosen for risk reduction alongside treating a diagnosed cancer.