Diffuse intrinsic pontine glioma (DIPG)

What it is

Diffuse intrinsic pontine glioma (DIPG) is a diffuse midline glioma that arises in the pons — a vital part of the brainstem. It occurs mainly in young children, is one of the most serious childhood brain tumors, and is now usually classified as a diffuse midline glioma, H3 K27-altered.

Understanding Diffuse intrinsic pontine glioma (DIPG)

DIPG arises within the pons, which controls vital functions such as breathing, swallowing, and movement, and infiltrates this critical structure diffusely. Because of its location and infiltrating nature, it cannot be surgically removed. Most DIPGs carry an H3 K27 alteration. Children typically present over a relatively short time with symptoms such as double vision, facial weakness, difficulty swallowing, and balance problems. Treatment usually centers on radiation, which can temporarily improve symptoms and provide a period of stability, but unfortunately DIPG carries a grave prognosis, with survival typically measured in months to about a year and a half. DIPG is an intense focus of research and clinical trials. This is among the most difficult diagnoses in medicine, and affected families receive specialized, compassionate support, including palliative care. Understanding DIPG clarifies this serious brainstem tumor of children.

Why it matters

Understanding DIPG helps families grasp this serious brainstem tumor — why its location prevents surgery, how radiation can relieve symptoms, and that the prognosis is grave — while knowing that specialized, compassionate support is available.