travel insurance cancer

Just been diagnosed with lung cancer that has moved out into the system and due to start radiation here in Aus next week for 12 days.

After that will be chemo of various types including immune type every 21 days.

They say survival approx. 5% @5 year mark........fit as a bull otherwise........no symptoms of the cancer just a nagging cough with runny nose that took a month to shift that I picked up last trip.

Obviously no cure for the former but doctor seemed to think no problem putting any treatment on hold for 4 or 5 weeks for our usual trip over home to Thailand each February.

Raises a question of what happens if I get some infection or whatever while on our yearly trip as apparently no bilateral health treatment arrangement that I know of between Australia and Thailand like there is for emergency health treatment in some other countries.

Anyone have any experience with Australia based travel insurance companies that provide some degree of cover should the need arise?

Edit: I see reference to Cigna at the head of this section however I tend to steer away from unknown companies from who knows where...............🤔