If you agree to take part in this study, your demographic information (such as your age, race, medical and surgical history, and type of cancer) will be collected. Information about the type of surgical procedure performed on you, your care during and after your surgery, any problems related to your surgery, and details about your follow-up care will be entered into a research database. This information will be collected from patients seen at M. D. Anderson since January 1, 1990. It will be used for future research studies.