Devon Still's Daughter Leah's Brave Cancer Fight Takes a Positive Turn

— -- NFL player Devon Still received the devastating news last year that his daughter Leah was fighting for her life.

At age 4, Leah had been diagnosed with a stage 4 neuroblastoma, ESPN reported. The cancer develops from immature nerve cells and most commonly affects children younger than 5, according to the Mayo Clinic.

The Cincinnati Bengals football team had cut Still, a defensive tackle, but brought him back to the practice squad so he could help take care of Leah and still have health insurance that would cover his daughter.

Ever since Leah’s diagnosis, Still has been documenting his daughter’s difficult treatment and major milestones.

The doting father sometimes was even willing to be a patient as Leah practiced her medical skills.

Before lengthy surgery to remove the tumor, a video of Still’s giving Leah a pep talk went viral.

He also snapped photos of Leah as she recovered from her surgery and chemotherapy treatments.

The team also gave back by donating all proceeds from Still’s jersey to pediatric cancer research. The jersey was quickly the top-selling jersey in Bengals history and the team ended up donating over $1 million to cancer research.

After undergoing months of treatment, Leah was finally able to see her father play for the Bengals again in November. Wearing a protective mask to help stop infection, Leah joined Bengal team officials as they gave a $1 million check to the Cincinnati Children’s hospital. The girl did not stay on the field for long and had to be taken of the field by her grandmother.

The girl did get a special picture with the Bengal’s cheerleaders.

]/>In the past few months, Still has documented sweet moments with Leah as she received treatment and seemed to be on the road to recovery.Last month the girl was healthy enough for a special walk down the runway during New York’s Fashion Week. Devon Still gushed on Twitter that Leah was "a natural." He, too, was wearing plaid and a vest, and said Leah was "trying to match [his] style."

Still shared happy news Tuesday that new scans show no sign of active disease. While more tests will be needed to confirm that Leah is in remission, Still posted a picture of himself and his daughter with the caption, "that moment you get the best news you've ever received and don't know what to do so you just flex!"

Leah will have a bone biopsy and MRI later this week.

ABC News' Sydney Lupkin contributed to this report.