A friend's sister beat colon cancer over ten years ago but now is having liver problems that took a while to pin down. They warned her she'd probably die in a couple years from the cancer without Chemo, but would have this risk long term and it recently showed up.
Chemotherapy can damage many organs including the liver. See "Organ Damage" on Wikipedia: https://en.wikipedia.org/wiki/Chemotherapy
A friend's sister beat colon cancer over ten years ago but now is having liver problems that took a while to pin down. They warned her she'd probably die in a couple years from the cancer without Chemo, but would have this risk long term and it recently showed up.