Hello from Sassysback, and the name says it all!

And she said she shouldn't have waited so long before having surgery.....as I remember.
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I wouldn't panic, but I would learn more and followup with a few direct questions. Just to understand it fully and know if there is any impact going forward.

As part of due diligence, I would get a copy of the biopsy and scope reports and see what exactly is said. I would then follow up with your gasteroenterolgist and ask if you should be worried or not. I think generally not as they said non-cancerous, but certainly "serated" does raise some eyebrows. I would ask whether you need more frequent monitoring (that is endoscopy) as a result of this finding.