East London Child's Remarkable Medical Journey
Jennifer McNeill, a 43-year-old mother from Barking in East London, has watched her daughter Bay, now nine years old, defy overwhelming medical odds since she was just a toddler. Bay has faced kidney failure, a kidney transplant, surgical complications, and a rare bowel cancer diagnosis, spending much of her childhood in and out of London's Great Ormond Street Hospital.
A Sudden Health Crisis
Bay's health struggles began unexpectedly in February 2018 when she was two years old. What initially appeared to be a common virus quickly escalated into a life-threatening situation. "We thought it was a virus... like a cold, a malaise," Jennifer recalled. After multiple visits to their GP and two trips to A&E, doctors continued to believe Bay was suffering from a viral infection.
The turning point came during what would have been their discharge from hospital. "One doctor said, on our way out: 'Actually, I'm going to do a blood test. She does look a bit of an odd colour'," Jennifer explained. The test revealed dangerously high potassium levels, indicating kidney failure. "I was in utter disbelief and shock," Jennifer said of the moment doctors delivered the diagnosis.
Emergency Treatment and Transplant Journey
Bay was immediately blue-lighted to Great Ormond Street Hospital where she was intubated and placed in a coma. "They very quickly told me that she's not going to survive the night," Jennifer remembered. Bay was placed on dialysis, and doctors determined she would need a kidney transplant.
Jennifer, who had previously donated a kidney to her own mother, couldn't serve as Bay's donor. Fortunately, her identical twin sister Mimi instantly volunteered to donate one of her kidneys. After three years of home dialysis administered by Jennifer, Bay received her aunt's kidney in August 2021, following delays caused by the COVID-19 pandemic.
The transplant initially appeared successful, with Jennifer noting "you could see the instant colour in Bay's face." However, complications soon emerged when doctors discovered Bay's lymphatic system had been damaged during surgery. She remained hospitalized until December 2021, with Jennifer describing the period as "terrifying" and "uneasy."
Cancer Diagnosis and Treatment
After recovering from transplant complications, Bay began to thrive, participating in homeschooling, Brownies, chess club, and performing arts. However, in early 2024, concerning symptoms reappeared, including blood in her stool and irregular blood tests.
In December 2024, an ultrasound revealed a mass in Bay's bowel, leading to a diagnosis of post-transplant lymphoproliferative disorder (PTLD), a rare lymphoma linked to Epstein-Barr virus that can develop in transplant recipients. "I think it's every parent's worst nightmare," Jennifer said of the cancer diagnosis.
Doctors initially prescribed lower-dose chemotherapy alongside immunotherapy, concerned that Bay's immunocompromised state couldn't tolerate more aggressive treatment. When this approach proved ineffective, medical teams decided to proceed with aggressive chemotherapy despite the risks. "The protocol they followed, they've only used it I think nine times in 20-plus years," Jennifer noted.
Remission and Ongoing Recovery
In November 2025, a PET scan confirmed Bay was cancer-free. "It was just the most wonderful news, considering she went in with one arm behind her back," Jennifer said. Bay now requires twice-yearly scans to monitor for potential relapse, but her prognosis is positive.
"We are just completely going to grab life with both hands," Jennifer declared. "It's really hard to put into words how much you appreciate life. You're just thankful and grateful, and I can't believe it, almost."
The Role of Spread a Smile
Throughout Bay's seven-year medical journey, the charity Spread a Smile has provided crucial emotional support. The organization brings entertainers, magicians, musicians, artists, and therapy dogs to seriously ill children in NHS hospitals and hospices.
Jennifer first encountered Spread a Smile staff in a park near Great Ormond Street Hospital when Bay was two years old. The charity has since become an integral part of their lives, offering Bay opportunities to socialize with other children facing similar challenges. "With Spread a Smile, we know that we're with like-minded families," Jennifer explained. "We know it's going to be – as much as we can predict – a safe environment."
Bay has returned to her normal activities, including Brownies, chess club, and performing arts, while continuing her homeschooling with Jennifer. Her remarkable resilience continues to inspire those around her as she embraces life after overcoming multiple life-threatening conditions.
