Adolescent and Young Adult Cancer Patients: Cognitive Toxicity on Survivorship (ACTS)

Inclusion Criteria: * between 15-39 years of age * newly diagnosed with breast cancer, lymphoma or germ cell tumor with treatment intent determined as curative by medical oncologist * scheduled for chemotherapy with or without non-cranial radiotherapy * no prior history of chemotherapy and/or radiotherapy * able to read and understand English * capable of giving informed consent (or obtaining parents' consent if required) Exclusion Criteria: * physically or mentally incapable of providing verbal/written consent * diagnosed with primary or metastatic brain tumor(s) or relapsed disease * treatment includes intrathecal or intraventricular chemotherapy * evidence of psychosis or underlying neuropsychiatric illness that may impair cognitive abilities * have immediate family member who is enrolled as in the healthy control arm * any contraindication to MRI as stated in the study protocol including: pregnancy, metal fragments/implants in body, known claustrophobia, and non-removable metal orthodontic braces, metallic retainers and oral wires