Small cell lung cancer

I was diagnosed last year with small cell lung cancer, i have completed my treatments this year, my first appointment with oncology was good, the Oncologist

said all was clear, apart from showing damage on my lung due to radiotherapy. my last appointment showed i had had a chest infection and that they wanted to keep an eye on the damage part of my lung. 

I am looking to go abroad with my son and his family next year, I have looked on line at loads of sites but the drop down menus only give the option for non small cell lung cancer.

I also have 7 stents suffer from angina and diabetes

1 quote i seen was for £3000

Can anyone recommend any insurance companies please?