Thymic Malignancies*

NCCN Categories of Evidence and ConsensusCategory 1: The recommendation is based on high-level evidence (e.g., randomized controlled trials) and there is uniform NCCN consensus.Category 2A: The recommendation is based on lowerlevel evidence and there is uniform NCCN consensus.Category 2B: The recommendation is based on lowerlevel evidence and there is nonuniform NCCN consensus (but no major disagreement).Category 3: The recommendation is based on any level of evidence but reflects major disagreement.All recommendations are category 2A unless otherwise noted.Clinical trials: NCCN believes that the best management for any cancer patient is in a clinical trial.Participation in clinical trials is especially encouraged.*Note: For 2011 and ongoing, these NCCN Guidelines have been renamed to Thymomas and Thymic Carcinomas.