
Kelley Mack was said to be suffering from Diffuse midline glioma (DMG), which is a rare and aggressive brain tumor, which affects children and young adults. This malignant tumor develops within the central brain and spinal cord structures, including the pons, thalamus and occasionally the spinal cord or cerebellum. While diffuse intrinsic pontine glioma (DIPG) used to exist as a distinct category, yet medical experts now refer to it as diffuse midline glioma (DMG) because of equivalent genetic elements and clinical behaviors