I am sort of like you in that I was diagnosed as Stage 4 because I had one tiny liver met--not even visible on scan--that was removed during surgery. Unlike you, I had a number of cancerous lymph nodes. But apparently all of them were removed also. My most current scan shows no masses or suspicious nodes anywhere.
What does this mean? Well, I quickly realized, when I started reading the (outdated) Stage 4 survival stats, that "Stage 4" included everything from you, with your uninvasive tumor and one tiny met to a person with multiple mets to the liver, lungs, brain, peritoneum, and spine at diagnosis. My initial impression that the stats were of minimal value was confirmed by the doctors, who pointed out that in addition there were effective drugs now that didn't exist when those patients were being treated.
My various doctors have talked of everything from possible stage 4 "cures," to controlling it as more or less a chronic disease. A chronic disease that might eventually be "cured" by one of the new treatments coming down the pipeline. I think that most doctors try to strike a balance between being optimistic and encouraging and being fairly realistic about the potential negatives.
F, 64 at DX CRC Stage IV
3/17/18 blockage, r hemicolectomy
11 of 25 nodes,5 of 5 mesentery nodes
0.5 cm sub-capsular liver met removed
pT3 pN2b pM1
BRAF wild, KRAS G12D
7/9/18 CT no masses or enlarged nodes, 2mm indeterminate lung nodule
11/20/18 CT same, Lung nodule likely calcified granuloma. Enlarged spleen.
12/20/18 Liver MRI 5mm liver met and 2 lymph nodes in porta hepatis, CT review shows progression of nodes on FOLFOX