Hi. Not sure if you have traveled yet or got insurance, but All Clear Travel will cover everything no questions, but it may add a substantial cost to your trip. I traveled last year to Canada etc & was planning to be away for 2mths. As I have lung mets, but only on oral hormone tabs, the insurance was going to cost around $6000. I contacted just about every insurance company & learnt to read fine print. Some will give you insurance but won't cover any medical costs, some will cover other medical costs. Same goes for cancellation. I ended up travelling with a company that offered no question cancellation, & covered other medical so long not related to my cancer. I know Flight Centre, who use covermore, will now offer 70% refund on cancellation regardless.
I found all this frustrating as I met up with a relation who was 12mths since having had a heart attack, was relatively inactive, overweight, on a CPAP machine, but was given insurance with only a minimal addition cost. Sucks!!!!
In short, read the fine print & ask questions. Mostly have a great holiday.