A paediatric nurse whose three-year-old son has an aggressive form of cancer says her medical knowledge has "been a blessing and a curse" as she watches him face "unimaginable things". Sarah Sloman, from Newport, said her son Teddy had been through "a horrendous 12 months" since being diagnosed with high-risk neuroblastoma, a rare type of childhood cancer. Advertisement AdvertisementShe's now trying to raise £250,000 to fund the next phase of Teddy's treatment, which is not currently available in the UK. Advertisement Advertisement"The treatment we've had up until now is all about sort of attacking the cancer and killing off the tumour," Sarah said. Sarah said Teddy's illness had also affected his younger brother Joey, who was born two months premature is and now 18 months old.