Pre-Fight MRI Reveals Rare Brain Disease, Canceling UFC Debutant's Fight

UFC newcomer Josiah Harrell's debut fight has been canceled after a pre-fight MRI found a rare brain disease called moyamoya syndrome.
The discovery necessitates brain surgery for Harrell, but he is expected to recover and continue his fighting career.
Harrell's opponent, Jack Della Maddalena, is now without an opponent for UFC 290.
At least one other UFC fighter has experienced a similar situation, received treatment, and returned to fighting.
The pre-fight MRI is seen as fortunate, as continuing to fight could have been dangerous for Harrell.