A suburban high school freshman has died after having a stroke during swim practice.
A swim coach for James Oliver, 14, said that the teen collapsed at West Chicago High School Dec. 8.
In a letter to parents, the principal at Geneva High School said Oliver suffered an AVM stroke and brain hemorrhage and was in critical condition until he died Sunday night.
A neurosurgeon at Northwestern Medicine explained that this very rare condition is usually congenital.
See ABC 7 Chicago
