Concerns have been raised about the follow-up care given to children when they come out of the hospital system after being treated for cancer.

Charities supporting them say many live with post-treatment health concerns through their adult years.

Mariosa Grace-Churchard, 24, from Dublin was diagnosed with B-cell lymphoma at the age of 14.

Although she is now cancer free, Mariosa has been left with chronic health issues due to a lack of follow-up care.

"I currently have one left total hip replacement and two shoulder replacements and I also have fractures in my knees and I have troubles in my other hip which will lead to other replacements as well," she said.

"I was transferred to adult hospitals but everything just seemed to go astray, one arm was shipped to one hospital, one knee was shipped to another place," she added.

"They would say come back later but I would never be seen again," she said.

Around 350 children and young adults are diagnosed with cancer in Ireland every year in Ireland.

A conference on childhood cancer in Dublin today heard calls for a centralised system to ensure cancer survivors get the follow up care they need into adulthood.

Evelyn Griffith, Manager at CanTeen Ireland cancer support group said a national programme to support these young people is vital.

"When they move from paediatric to the adult services unfortunately they are sometimes missed in the system," she said.

"A lot of the side effects of their treatment like endocrine, fertility, psychological, emotional effects, education, these can get left so the teenagers or young people are not actually helped," she added.

Professor Owen Smith, Hematologist & National Clinical Lead for Children and Adolescent Cancers said there needs to be more training for doctors and nurses in this area over the coming years.

"A lot of the drugs we have treated these individuals with over the years have knock-on negative effects," he said.

"We are curing at a cost and the costs are these other comorbidities like bone disease, lung disease, brain disease, and even second cancers that these patients can get," he said.

"We need to look at this cohort really carefully going forward so we can intervene and make their quality of life much much better," he added.

Mariosa said her quality of life would be greatly improved if she had received proper follow-up care after her cancer treatment.

"I need to start living and I constantly have to fight for every small treatment that I get," she said.

"Trying to get your foot in the door is so hard, its so exhausting," she added.