A man told by doctors that he had less than a week to live has tied the knot with his fiancée in an impromptu ceremony in hospital.

Darren Sisk, 47, from Vancouver, Washington, had been in remission for 16 years after battling Hodgkin’s lymphoma.

Mr Sisk recently started suffering from stomach pains but ignored the symptoms.

When the pain became unbearable, he visited the hospital where doctors told him he likely wouldn’t live longer than a week.

After hearing the news, Mr Sisk had one wish: he wanted to marry his fiancée.

Mr Sisk met his wife, Crickett, 10 years ago when he saved her grandson from being struck by a car.

“I'm marrying my best friend,” he told KGW-TV .

“She was coming to the hospital every day to come see me. We became best friends and then became lovers.”

The PeaceHealth Southwest Medical Centre quickly rallied a team together to perform the ceremony last Monday.

About a dozen family members gathered in Mr Sisk’s hospital room to watch him marry his fiancée.

But that wasn’t the only surprise for Mr Sisk on his wedding day. His pregnant daughter, Jayleen, planned a surprise ultrasound so he could see his see his granddaughter.

“He wants to live long enough to see his grandchild and that's not going to happen,” physician’s assistant Cassandra Sappington said.

“So I tried to think outside of the box and I thought if I could bring his grandchild to him for just a few minutes and so we provided a way for him to see his grandchild.”