Image caption Can the humble pea grow anywhere?

A Massachusetts man who was rushed to hospital with a collapsed lung came home with an unusual diagnosis: a pea plant was growing in his lung.

Ron Sveden had been battling emphysema for months when his condition deteriorated.

He was steeling himself for a cancer diagnosis when X-rays revealed the growth in his lung.

Doctors believe that Mr Sveden ate the pea at some point, but it "went down the wrong way" and sprouted.

"One of the first meals I had in the hospital after the surgery had peas for the vegetable. I laughed to myself and ate them," Mr Sveden told a local Boston TV reporter.

Mr Sveden said the plant was about half an inch (1.25cm) in size.

"Whether this would have gone full-term and I'd be working for the Jolly Green Giant, I don't know. I think the thing that finally dawned on me is that it wasn't the cancer," Mr Sveden said.

He is currently recovering at home with his wife Nancy, who joked that God must have a sense of humour.