Have done some research on the NCCN web site. My initial view is...

Have done some research on the NCCN web site.

My initial view is that the recommendation for SIRT has been upgraded from 3 to 2A.

2016- https://www.nccn.org/professionals/physician_gls/pdf/colon_blocks.pdf
2017 - https://www.nccn.org/professionals/physician_gls/pdf/colon.pdf

2016 paper clearly states a cat 3 view.

2017, released now removes the cat 3, and by default becomes a 2A recommendation.

Not being a medic, I may be confused and would prefer some informed validation as to my reading of these papers.