Biospecimen and Medical Data Collection and Tumor Biopsy in Creating Research Tissue Registry in Patients With Inflammatory or Invasive Breast Cancer

This trial studies the biospecimen and medical data collection in creating a research tissue registry in patients with inflammatory or invasive breast cancer. Collecting medical data and storing samples of blood, tissue, and stool from patients with inflammatory breast cancer to study in the laboratory may help doctors find better ways to treat and study inflammatory breast cancer in the future.

Inclusion Criteria: * Patients with clinical diagnosis of primary inflammatory breast cancer (IBC), second primary IBC, or highly suspicious for IBC (MD Anderson patients only). * Histological diagnosis of invasive breast cancer, or highly suspicious for IBC (MD Anderson patients only) but pending breast cancer diagnosis. * Be either newly diagnosed, or highly suspicious for IBC (MD Anderson patients only) \[Cohort I\] or have paraffin blocks or up to 20 unstained slides of each representative block(s) from the time of initial diagnosis of IBC(i.e. core biopsy and punch biopsy) and/or from mastectomy (Cohort II-MD Anderson patients only) * Age \> 18 years * Able to provide informed consent Exclusion Criteria: