The overall goals of this Multi-Investigator Research Proposal is to further the understanding of the development and identify prognostic characteristics of liver tumors in children, particularly hepatoblastoma and its variants through a combined genomic and molecular pathology approach.

The purpose of this study is to identify genetic variants that predict progression of prostate cancer.

A research study about factors that might increase the chance of getting breast and ovarian cancers. Eligible: female 18-80 yr old; diagnosed with breast cancer under age 50; diagnosed with ovarian cancer at any age; strong family history of breast and/or ovarian cancer.

This research trial studies kidney tumors in younger patients. Collecting and storing samples of tumor tissue, blood, and urine from patients with cancer to study in the laboratory may help doctors learn more about changes that occur in deoxyribonucleic acid (DNA) and identify biomarkers related to cancer.

This research trial studies neuropsychological (learning, remembering or thinking) and behavioral outcomes in children and adolescents with cancer by collecting information over time from a series of tests.

The investigators hypothesize that the combination of eflornithine and sulindac will be effective in reducing a three-year event rate of adenomas and second primary colorectal cancers in patients previously treated for Stages 0 through III colon or rectal cancer.

This clinical trial studies the effects of dexrazoxane hydrochloride on biomarkers associated with cardiomyopathy and heart failure after cancer treatment. Studying samples of blood in the laboratory from patients receiving dexrazoxane hydrochloride may help doctors learn more about the effects of dexrazoxane hydrochloride on cells. It may also help doctors understand how well patients respond to treatment.

RATIONALE: Estrogen can cause the growth of breast cancer cells. Hormone therapy using tamoxifen citrate, goserelin acetate, leuprolide acetate, anastrozole, letrozole, or exemestane, may fight breast cancer by lowering the amount of estrogen the body makes. Everolimus may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth. It is not yet know whether hormone therapy is more effective when given with or without everolimus in treating breast cancer. PURPOSE: This randomized phase III trial studies how well giving hormone therapy together with or without everolimus work in treating patients with breast cancer.

This randomized clinical trial studies how well an adaptive computerized cognitive training program works compared to a non-adaptive computerized cognitive training program in treating younger patients with brain tumor who underwent radiation therapy. Providing a computer training program may improve the well-being and quality of life of patients with cognitive (physical and mental) function difficulties caused by radiation therapy to the brain.

This randomized phase III trial studies standard or comprehensive radiation therapy in treating patients with early-stage breast cancer who have undergone surgery. Radiation therapy uses high-energy x rays to kill tumor cells. It is not yet known whether comprehensive radiation therapy is more effective than standard radiation therapy in treating patients with breast cancer