BY Simona Shaitelman, M.D.

Women with early stage breast cancer have so many different treatment options that the choices can be overwhelming. For almost all women who choose to keep their breast (and avoid mastectomy), radiation therapy is almost always a part of the treatment plan.

The radiation regimen for which we have the longest follow-up data involves treating the whole breast, every day for five weeks, typically with an additional one-week &quot...