Hi @shiwalika,
I’m truly sorry to hear about your diagnosis but first, I want you to know that you are not alone. Although I can only imagine the anxieties and struggles on such a tough journey, I’m very glad that you reached out to the Connect community – Welcome!

I’m tagging @bush in this discussion, https://connect.mayoclinic.org/discussion/cea-levels/ who has written about their mother's colon cancer which led to peritoneal metastasis.
I’d also like to invite @linda4765 @travelgirl @juliedl @tressa and @zeiengirl to join us here; you can view their posts in this conversation about HIPEC: https://connect.mayoclinic.org/discussion/hipec/

You might find this Mayo Clinic research/article helpful; it has contact information and you can call with questions you might have:
https://www.mayoclinic.org/medical-professionals/cancer/news/cytoreductive-surgery-and-hipec-offers-effective-treatment-for-selected-patients-with-peritoneal-carcinomatosis/mac-20429726”
According to Dr. Wasif, Department of General Surgery at Mayo Clinic's campus in Arizona, "With HIPEC, it is possible to completely cure 25 to 30 percent of patients with these types of cancer. That’s a vast improvement on systemic chemotherapy, which is essentially palliative at this point.”

Here’s another recent study that concludes, "CRS plus HIPEC combined with systemic modern chemotherapy is feasible for the management for PM of CR origin most widely accepted by experts, as accumulative evidence suggests that it improves recurrences as well as overall and peritoneal disease-free survival.” https://www.wjgnet.com/1007-9327/full/v25/i27/3484.htm

@shiwalika, may I ask if you would share more details? What type of surgery did you undergo? When were you diagnosed with colon cancer? I look forward to hearing more from you.