My Mothers Diagnosis

Hello everyone, I am new here and I am fortunate to have found this website. My post is regarding my mother. A little backstory on how she got her diagnosis in 2020 right before the pandemic she started getting really bad stomach pains. Know if anyone knows my mother, she does not complain about pain one bit. She has never taken off of work in 50 years. Took her to a hospital here in Illinois. They said it looks like a ruptured appendix and they need to drain it before they do surgery. They go to put the drain in. They leave it in for about a week only drained very little and the doctor was like well that’s kind of odd. Let’s try it again so they put the drain in again same thing happens they do it a third time and when they do with the third time the doctors as well this is pretty rare that we have to do it twice and then a third time so we’re just gonna go ahead and do surgery. They remove the appendix and they found a tumor inside the appendix, so I’m assuming that the tumor got so big that it ruptured the appendix. The night before I had my son I get a phone call saying that my mother has cancer. And not just any cancer a rare appendiceal adenocarcinoma. So when we went back to that same doctor, he basically told us he’s never seen that before so what I did was I took my mothers file and went to get a second opinion at a different hospital in Chicago. We met with a wonderful doctor and she said well it looks like we do not see cancer after the surgery so we’re going to do a preventative chemo and that was FOLFOX( I hope I spelled it right because right now currently she is on FOLFIRI). She did very well on it. Rare Lee she had any severe symptoms she had some hair thinning may be a little nauseous, and I think the worst part of that one was the neuropathy, but overall seemed fine. Fast forward about 2 1/2 years later this past January, they kept seeing fluid around the area where the appendix was so they just kept watching it. They did a pet scan also did not light up with cancer so we were pleased. , Beginning of May they see the fluids a little bit more so the doctors like well let’s just do a biopsy to be sure do the biopsy week later we get results cancer is back. It bothers me that the scans cannot detect all cancers. As of today she has done six rounds of her recent chemo and as of yesterday she had a scan and we are currently waiting the results of that scan. We should know by today because she sees the doctor today. Also has chemo today. My question is I know it is a rare cancer but I have noticed some people saying they are diagnosed with it here. If you can please give me some insight if there is any other treatments just in case her current regimen isn’t working. Thank you so much. God bless you all.