Inspirational cancer fundraiser Stephen Sutton has hit back at a Twitter user who said he felt "duped" that the teenager was out of hospital.

Stephen, who has raised almost £3.2 million for the Teenage Cancer Trust, informed the Twitter "troll" his illness was still incurable despite his discharge from Birmingham's Queen Elizabeth Hospital.

Dozens of the teenager's friends and followers leapt to his defence on social media after a message was posted on Twitter saying "lots" of people who had donated to the Trust now felt duped.

In a direct response to the message, Stephen said: "Sorry to disappoint you! So you know, I still have my cancer and it's still incurable, if that makes you feel less 'duped' x."

Tweeting to his 188,000 followers, the 19-year-old added: "RE the troll tweet I replied to, I really didn't expect the response to get so much exposure.

"I just gave a quick response, thought nothing of it and was (and still am) completely unaffected by it.

"Trolls and cynics exist. It's a shame. But just try not to retaliate too aggressively or get too riled... Like I've said before: On the whole people are 'good', let's concentrate on that."

Stephen was discharged from hospital on Friday, hours after meeting David Cameron, who praised the teenager's "incredible" zest for life during his three-year fight against multiple tumours. The Prime Minister also tweeted a link to Stephen's JustGiving page, where he has raised £3,192,857 for the Teenage Cancer Trust. More than 132,000 people have so far made donations to the JustGiving page.