Rare forms of Non-Hodgkin Lymphoma (NHL) account for 3% - 7% of pediatric cases. This study establishes a database of pathologically reviewed cutaneous and rare NHL including clinical presentation, therapy and outcome. It establishes a bank of tissue available to qualified investigators for research into biology, flow cytometry, and molecular analysis of these rare tumors.
RATIONALE: Collecting and storing samples of tissue from patients with cancer to test in the laboratory may help the study of cancer in the future. PURPOSE: This research study is collecting and storing tissue samples from patients with rare or cutaneous non-Hodgkin lymphoma.