Travel insurance - suggestions of companies that might consider cover for cancer sufferer, in his 80's

Less than one minute read time.
A Bone Cancer sufferer I know cannot find travel insurance. He wishes to go on a cruise with his wife and is in his eighties. I know there has been mention of this subject before on the site but I cannot find any information. Can anyone please suggest a company that might offer to cover him. Or elsewhere to contact where he can find a company. Thank you in anticipation. Lynne
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