It is so frustrating looking online for information on SRC carcinoma. I agree, all the information is depressing and not helpful! It is true that the treatment is the same as for non-SRC colon cancer, except that closer monitoring is a good idea. My insurance was willing to pay for quarterly PET/CT scans after treatment, so that is what I did (a lot of radiation, but I believe it was worth it, since the chance of recurrence is higher and it is best to catch them early if possible).
About me--I had Stage 3c signet ring colon cancer in 2008, with 14 out of 18 positive lymph nodes. I did six months of FOLFOX and I have not had a recurrence. It's true that SRC is more aggressive, but there are success stories like mine. I was in contact with a woman who was 10 years out from a stage 4 SRC appendix cancer diagnosis and she was doing well! It is good that your cancer is 3a, and not more advanced. Some of the lower prognosis for SRC is that it tends to be found later than other colon cancers, because it grows fast.
The one thing I would do differently, if I could, is that I would try harder to avoid obsessing about statistics and prognosis. I really, really drove myself crazy with that stuff. It's easy for me to say this now, but whether or not I was to have a recurrence, the time I spent torturing myself on the internet is time wasted. (I am totally not saying you are torturing yourself!! Just that is what I did and I always hope other folks can avoid doing it because it is a miserable place to be.)
Sending you my very best wishes. I hope your recovery from surgery and subsequent treatment goes well!
Diagnosed stage 3C signet ring colon cancer in May, 2008
14 out of 18 positive lymph nodes
Final treatment in November, 2008
NED ever since
I used to have an account under "Dori," but I've forever lost access to it.