Additional Study Information: Surgery is the main treatment for many cancer conditions. In many elderly patients, surgery can greatly affect physical condition, and the ability to return to pre-surgery levels of physical functioning. By providing some simple pre-surgical recommendations, it may be possible to improve the rate of recovery from surgery and the possibility that patients will return to their pre-surgery levels of function. Your doctors are participating in a study to determine if a change in how they evaluate and manage elderly patients will improve recovery rates from major cancer surgery. Doctors and members of the surgical team will use a group of assessment tools called OPTI-Surg that helps them make pre-surgery referrals and recommendations. The research study team wants to find out if using OPTI-Surg to guide pre-surgical referrals and recommendations can help improve recovery for elderly patients after cancer surgery. There will be about 450 people taking part in this study. Cancers include: Bladder cancer, esophageal cancer, kidney cancer, adrenal cancer, lung cancer, stomach cancer, colon cancer, rectal cancer, liver cancer, and prostate cancer.