Both diseases are manageable but not curable, and both can be deadly if untreated.

FORBES: Pharma Be Aware: The Next Killers

The news was that Elizabeth's cancer was not curable, but it was treatable.

NPR: Edwards Will Stay in Race Despite Wife's Cancer

Studies find that although doctors usually tell patients when a cancer is not curable, most are reluctant to give a specific prognosis, even when pressed.

NEWYORKER: Letting Go

He said the cancer is treatable but not curable.

CNN: Edwards: Wife's cancer returns, campaign goes on

But we need to keep in mind, too, that it's only been within the last 30 years or so that we actually can cure a lot of cancers that before were not curable.

NPR: Confronting Misconceptions About Cancer Prevention

The bone is one of the most common places where breast cancer spreads, and once it does so it is not considered curable.

NPR: Wife's Illness Won't Halt Edwards Campaign

Although some infections such as chlamydia are curable, others including herpes, HPV and HIV are not.

BBC: Magazine