An investigation has begun after doctors revealed that cancer treatment for a 3-year-old boy from Plymouth was carried out incorrectly.
Consultants told Elsbeth and Mike Hallam that radiotherapy beams supposed to be targeting their son's tumour, were wrongly set up.
The hospital says the problem has now been rectified and won't affect treatment.
An investigation is underway into how radiotherapy was set up wrongly for a 3-year-old boy from Plymouth.
Henry Hallam was being treated for a rare form of cancer. Bristol Children's Hospital says the problem was quickly fixed and was unlikely to have affected his treatment.
Henry's parents are trying to raise £500,000 for specialist help in the States. You can find out more here.