A cancer-suffering boy's family was bombarded with abuse after thanking Donald Trump's son Eric for donating $16.3 million to his hospital.

Zach, from Memphis, was diagnosed with cancer aged four and years later is in remission after treatment at St Jude's Hospital.

His aunt Sherrie Hopper discovered that Mr Trump donated millions to the hospital and thanked him on Twitter for helping save Zach's life.

Zach, from Memphis, was diagnosed with cancer aged four and years later is in remission after treatment at St Jude's Hospital

His aunt Sherrie Hopper discovered Eric Trump donated millions to the hospital and thanked him on Twitter for helping save Zach's life

The next day, Mr Trump retweeted her post with a note detailing his foundation's history of support for the pediatric hospital

'Eric Trump Thank you for your commitment to St Jude. This St Jude family is eternally grateful,' she wrote on Twitter on June 27.

The next day, Mr Trump retweeted her post with a note detailing his foundation's history of support for the pediatric hospital.

'St Jude is the best cause in the world! It has truly been one of the most important and meaningful missions of my life,' he wrote.

Ms Hopper said she, Mr Trump, and even St Jude were immediately bombarded with angry messages and tweets.

Many accused her of making up Zach's story to make the Trump family look good, or refused to believe Mr Trump donated the money.

Zach is cancer-free and plans to run in a fundraiser for the hospital to help other sick children

Ms Hopper said she, Mr Trump, and even St Jude were immediately bombarded with angry messages and tweets

One even accused her of being a 'Russian bot' spreading misinformation

Others alleged Mr Trump stole money from his foundation

One even accused her of being a 'Russian bot' spreading misinformation and others alleged Mr Trump stole money from his foundation.

Ms Hopper made a video showing Zach to 'prove he was real' and expressed her shock at the abuse she received just for thanking a donor.

Ms Hopper made a video showing Zach to 'prove he was real' and expressed her shock at the abuse she received just for thanking a donor

'The hate that has come out is unreal,' she said.

'Now you're going to attack a charity? You're going to attack a St. Jude family? Someone who went through hell for four years? Come on, now,'

'They have no boundaries, no conscience, they will just hide behind the keyboard and it's just ok to be nasty and hateful to people.'

'Well, it's not. We already went through hell, we don't need you. We don't need this.'

Mr Trump also commented on the abuse they received, adding 'sadly, nothing is off limits for some'.

Ms Hopper said the abuse continued for almost two weeks afterwards and she regretted starting it off by thanking Mr Trump.

'I don't care what you say to me. The hospital should have been left out of the crazy replies. St. Jude should be Sacred. Why can't people just be kind to one another?' she said on Sunday.

Ms Hopper said the abuse continued for almost two weeks afterwards and she regretted starting it off by thanking Mr Trump

Richard Shadyac Jr, president of St Jude's fundraising organization, wrote a letter to Mr Trump in December 2016 thanking him for his support.

'We are expanding our lifesaving work and are working to push cure rates even higher in this country and around the world, while improving the lives of survivors by developing and advancing treatments that reduce side effects,' he wrote.

'We are only able to do this because of the support provided by donors and supporters like you.'

Zach, now cancer-free, plans to run in a fundraiser race to collect donations to help other sick children at St Jude.