The family of a four-year-old boy from Essex - who died from cancer that was not spotted soon enough - are urging parents to challenge doctors about their diagnoses.
MacKenzie Cackett met the Duchess of Cambridge at his hospice shortly before he died in 2012.
Addenbrooke's and Colchester Hospitals, where he was treated, have now admitted the first tumour should have been found earlier.
Hundreds of motorcyclists have taken part in a toy run in Cambridgeshire delivering presents to sick children at Addenbrooke's Hospital.
They rode from Anglesey Abbey into Cambridge with a police escort, to give gifts to youngsters who will have to stay in the hospital over Christmas.
Organiser Peter Vasey said: "Bikers enjoy doing this kind of thing - you'll find bike runs all over the country for various different hospitals at Easter and Christmas. I hadn't been able to find one since I moved here and this year I thought if there isn't one on, I'll give it a go."
The visit had been organised with the help of the Addenbrooke's Charitable Trust and each rider brought a gift for a sick child.
Click below to watch a report from ITV News Anglia's Stuart Leithes
Visiting restrictions are now in place at the Addenbrooke's and Rosie hospitals in Cambridge to stop the spread of norovirus.Read the full story ›
Addenbrooke's hospital is to share in £11m of funding to help improve prosthetic and rehabilitation services for ex-military personnel.Read the full story ›
Addenbrooke's hospital in Cambridge is among NHS centres across the country set to benefit from additional funding to improve prosthetic and rehabilitation services for ex-servicemen and women.
Addenbrooke’s Rehabilitation Clinic will benefit from a total £11 million made available by the Government over the next two years to ensure veterans are able to access a high level of prosthetic and rehabilitation care.
It's similar to that which the Armed Forces provides for men and women currently serving in the army, navy and air force.
The Addenbrooke's hospital emergency department is in the national top ten for hitting it target for waiting times.Read the full story ›
Harry Judd from the pop group McFly and the Duchess of York have opened a new hospital unit for teenage cancer patients in Cambridge today. Harry is an ambassador for Addenbrooke's Teenage Cancer Trust Unit.
Thames Valley Police say a man's died after a collision at Ledburn in Buckinghamshire. The crash involved a farm vehicle and three cars. One car driver, a 46-year-old man, was killed, the other two drivers are in Addenbrookes Hospital in Cambridge with serious injuries.
Police want to speak to anyone who was driving along the road around the time of the collision. Officers would also like to trace a man who stopped just after the collision and spoke to the driver of the farm vehicle. They believe he was driving a blue or grey medium-sized hatchback.
Sergeant Jim Lovell of the Joint Roads Policing Unit based at Three Mile Cross can be contacted via the 24-hour police enquiry centre on 101. To contact Crimestoppers anonymously call 0800 555 111 or visit www.crimestoppers-uk.org.
Scientists based at Addenbrookes Hospital in Cambridge are building a device to help stop infections spreading on hospital wards.
The black box uses DNA profiling to help spot bacteria. In an early test at the Rosie Maternity Hospital it helped stop an outbreak of the MRSA superbug.
The technology could be available within a few years.
An invention by doctors at Addenbrooke's Hospital and Cambridge University could revolutionise the way children's vision is tested.
Their design tracks children's eye movements on a TV screen. It could help prevent blindness by detecting early problems with peripheral vision caused by conditions such as brain tumours.
Kidz eyez has already won an NHS innovation award and Addenbrooke's hope it could soon be arriving at a hospital near you.