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MIAMI (CBSMiami) – Last year, while Salma was vacationing with her family from Venezuela, she complained to her parents of back pain and even had trouble walking.

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Salma Richani, then 4 years old, was taken to the emergency room and after several tests, her parents received some hard-to-hear news. Doctors diagnosed her with neuroblastoma, a rare type of cancer that affects the nervous system in young kids.

“We know the pay-off of healing isn’t just physical, it’s emotional and psychological, so being able to up-lift her and have exciting things go on and occupy her mind as she’s going on with her treatment—that’s what we’re all about here,” said Elizabeth Carroll with Holtz Children’s Hospital in Miami.

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Salma’s been hospitalized dozens of times. She’s had multiple rounds of chemotherapy and even a stem cell transplant.

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Salma, on Friday, finished her last round of treatment, and as she was leaving the hospital with her family, she was greeted with quite the surprise.

More than 100 strangers joined-in on a flash mob to Salma’s favorite song.

It was a difficult surprise to pull off, considering it was so many people, but her parents said it was well worth it.

Salma’s parents are happy the tough part is over and are looking forward to getting their little girl home and enjoying some good food—but they have one more surprise first.

“Maybe later to Toys R’ Us to get some toys for her because she did great,” Salma’s father, Kaled Richani said.

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