The COC requires annually a review that patients are being treated, screened or worked up according to a guideline (NCCN, ASCO, etc.) at their centers. Previously we have reviewed whether patients are getting XRT for N2 NSCLC and whether they are referred for XRT for 4+ node positive breast CA. I was wondering if anyone had any good experiences with this and found it helpful. So far we have yet to really use it to aid in changing practice. Any good ideas on what to review?