Last year, July 2022, I was operated on for what turned out to be stage 2a colon cancer. All the cancer was removed and no lymph nodes effected. My oncologist gave me a 92% chance of no recurrence. Chemo would have increased that to 95%. I gave it a lot of thought and opted to not do chemo. My decision was based on many things. One was my age, 70 years old. Two was how it would affect my immune system (covid was still very much out there), and third was it would have delayed the colostomy reversal (perhaps not the best reason, but that was my mindset ). I've been having CT and blood work done every six months and yearly colonoscopies. Been cancer free for a year now. To do or not do the chemo is a highly personal decision. I'm sure that whatever decision you make it will be the right choice for you. I wish you only best.