Get away. You can have a new life.

Talk with the police, talk with domestic violence support people. If the local shelters don't work for you somehow, call the National Domestic Violence Hotline at 1-800-799-SAFE (7233). Tell them all your concerns.

I fully agree with what everyone else has written so far. Get away. Make a safety plan, save up what $ you can. Call in all the help available.

Let everyone else take care of themselves. You don't owe him anything, cancer or not. Anyone he and his family could threaten, they all have the ability to ask for police and other help.

You come first. You deserve safety.