Meet two-year-old Hazel Hammersley.
In April, doctors discovered a neuroblastoma tumour in her abdomen.
Hazel and her mother Lauren have been staying at Children's Hospital Los Angeles during her treatments and Lauren admits they've been going a little stir-crazy. To pass the time, they've been taking walks, colouring in, play with Play-Doh, dressing up, getting creative with Hello Kitty tattoos …
Earlier this month, Hazel was admitted to the hospital with a fever. Her grandmother came to visit and told her about a funny sign someone put in the window of her hospital room when she was a girl. Hazel decided she wanted a sign too.
Together they stuck up letters with medical tape, saying "Send pizza RM 4112". "The nurses, doctors, other children and we all had a great time with it and thought it was just something to brighten someone's day."
"This sign was up for several days without even a single phone call asking to send up a pizza (which we completely expected!). Then, on Saturday, it all changed ..."
A man drove by the hospital and saw the sign. He took a photo and posted it on Reddit with the caption: "Photo taken outside Children's Hospital in Los Angeles. Smart kid."