Brainstem Gliomas

A brainstem glioma is defined by where it grows, but its behaviour depends on whether it is diffuse or focal. Diffuse intrinsic pontine glioma (DIPG), now classified molecularly within diffuse midline glioma H3K27-altered, infiltrates the pons and mingles with functioning neural tissue. A low-grade focal tumour, such as a pilocytic astrocytoma, is more circumscribed and may be surgically approachable. That distinction drives almost every clinical decision. A child who develops diplopia, facial weakness, limb weakness, and ataxia over several weeks needs urgent neurological assessment and MRI. A child with new vomiting, reduced alertness, swallowing difficulty, or an irregular respiratory pattern may have crossed from a chronic tumour problem into an airway or intracranial-pressure emergency. The nurse’s working model is therefore: identify the tumour pattern, establish a detailed neurological baseline, and treat any change in airway protection, breathing, consciousness, or intracranial pressure as a time-sensitive deterioration.