NCCN ALL Response Criteria for Lymphomatous Extramedullary Disease Complete Remission

**Semantic type:** Intellectual Product

**Definition:** Complete resolution of lymphomatous enlargement by CT. For patients with a previous positive PET scan, a post-treatment residual mass of any size is considered a CR as long as it is PET negative. (Adapted from NCCN Guidelines, Version 1.2020, February 20, 2020)