If your dr is experienced, he can probably tell by just looking at it, if it's cancer or not. Immediately after my colonoscopy, the dr told me it was cancer, and recommended a surgeon, without even waiting for a biopsy. I was then given a blood test, which showed an elevated CEA.
Your dr told you that it has the appearance of being benign, but of course, you have to wait for the biopsy to confirm (which is the hard part). Try not to worry too much - the chances are that it's benign and if it's not, then you can deal with it.
May 2015 right hemi CC cecum
removed terminal ileum, illeocecal valve, appendix, cecum, ascending colon, omentum
stage 3b T3 N1b MX 2/27 nodes (isolated tumour cells in 1 add'l node)
PNI - positive
LVI - positive
Folfox 12 sessions (without oxi for 11 & 12)
Neulasta with 3-12 due to low WBC count
CEA at diagnosis 8.6
CEA after surgery 1.2
CEA during chemo 4.6 / 3.3 / 2.3
CEA after chemo 1.5 / 1.2 / 1.2 /1.2 /1.2 / 1.4 / 1.1 / 1.2 / 1.9 / 1.3 / 1.6 /1.4 /1.5