Popular Newcastle surfer Sabre Norris has revealed doctors have found pressure on her brain and that she's not growing as she should be.
The 12-year-old social media star has posted a picture on Instagram of herself wearing a hospital gown about to get an MRI, the latest in a series of medical tests.
Her final tests will take place today.
Sabre shot to fame after appearing on Channel 9's TODAY, where she called her Olympian dad Justin Norris "fat" because of how much ice cream he eats.
The clip went viral and caught the attention of US talkshow host Ellen Degeneres, who invited Sabre on her show.