Brazil's Christ the Redeemer statue is lit up in pink as part of a campaign for breast cancer awareness. The country's survival rate for the disease is improving. Felipe Dana/AP hide caption

itoggle caption Felipe Dana/AP

Emily Whittington, a radiation therapist at Vanderbilt-Ingram Cancer Center, pulls down a mask intended to guide radiation beams into patients with head and neck cancer. Emily Siner/NPR hide caption

itoggle caption Emily Siner/NPR

Proton beam therapy can precisely target tumors to avoid harming surrounding tissue, advocates say. Blythe Bernhard/St. Louis Post-Dispatch/MCT/Landov hide caption

itoggle caption Blythe Bernhard/St. Louis Post-Dispatch/MCT/Landov

Defensive tackle Devon Still says that being on the Cincinnati Bengals' practice squad will let him keep his insurance — and to stay close to his daughter, who's battling cancer. Christian Petersen/Getty Images hide caption

itoggle caption Christian Petersen/Getty Images

First-year medical student Michelle Gentile assists her classmate Abbie Harts as she performs a pelvic exam on a volunteer at Northwestern University. Joshua Lott/Reuters /Landov hide caption

itoggle caption Joshua Lott/Reuters /Landov

Two cervical cancer cells divide in this image from a scanning electron microscope. Steve Gschmeissner/Getty Images/Science Photo Libra hide caption

itoggle caption Steve Gschmeissner/Getty Images/Science Photo Libra