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April was born with spina bifida and was later diagnosed with tumours at the base of her spine which she says have left her in constant, debilitating pain.

Fatima, who is from Sudan, found out she had lung cancer in January and had surgery in March to remove a tumour and is due to start a long course of chemotherapy treatment.

A tearful Davina McCall said the removal of a brain tumour was "the hardest thing" she had ever been through as she reflected on the experience during Red Nose Day's 40th anniversary show.

However, staff there "downgraded the diagnosis", saying the tumour was not cancerous.

Smith has received immunotherapy treatment for a rare form of lung cancer called pulmonary pleomorphic carcinoma, which he said had helped shrink his tumours significantly.