Fiz Brown (Jennie McAlpine) is utterly devoted to her 5-year-old daughter, Hope.
But the loving mum is about to be delivered a crushing blow when she learns that her little girl (who was born with a hole in the heart) has been diagnosed with neuroblastoma, a highly-aggressive form of cancer.
A soap source told The Mirror: “Producers have gone to great lengths to understand as much about this cancer as possible.
“They want to portray accurately and sensitively what must be a very distressing time for parents and sufferers alike.
“These will be some of the most heart-wrenching scenes ever seen on the show.”
Neuroblastoma affects around 100 children each year in the UK.
It usually affects children under the age of five, and can even occur before a child is born.
The cause is unknown - and the symptoms, such as loss of appetite, and aches and pains, are so common that it is hard to diagnose the disease in its early stages.
The NHS explain: “Almost half of neuroblastoma cases are an aggressive form and, despite very intensive treatment, the cancer may return.
“In these cases, further treatment will often be necessary.”
Corrie bosses have reportedly consulted with the charity Neuroblastoma Children’s Cancer Alliance, as well as doctors and parents of children with the disease, to ensure that the disease is portrayed realistically and sensitively in the soap.