Clinical Research Directory

Inclusion Criteria: * Age \>= 18. * Eastern Cooperative Oncology Group (ECOG) performance status =\< 2. * Able to understand study procedures and to comply with them for the entire length of the study. * Ability of individual or legal guardian/representative to understand a written informed consent document, and the willingness to sign it. * Diagnosis of invasive malignancy. * Able to ambulate independently (without the assistance of a cane or walker). * Planned treatment with fractionated external beam radiotherapy over at least 5 days (no fractional requirement). * Not a previous participant on this protocol for subsequent courses. Exclusion Criteria: * Participants bound to a wheelchair. * Participants unable to ambulate independently (needing assistance of cane or walker).