We are revising some of the criteria in the Listing of Impairments (the listings) that we use to evaluate claims involving malignant neoplastic diseases (cancer) \1\ under titles II and XVI of the Social Security Act (Act). The revisions reflect our adjudicative experience, advances in medical knowledge, diagnosis, and treatment, and public comments we received in response to a Notice of Proposed Rulemaking (NPRM). ---------------------------------------------------------------------------