Brain Tumor

Pediatric central nervous system (CNS) tumors are the most common solid tumors in childhood and the leading cause of cancer-related mortality in the pediatric age group. The diagnosis carries significant anxiety for families and clinicians alike. However, pediatric brain tumors represent a heterogeneous spectrum of diseases. Not all pediatric brain tumors “misbehave.” A large proportion are low-grade, biologically indolent lesions where complete surgical resection equates to a long-term cure, and even malignant variants have seen profound transformations in survival through contemporary molecular risk-stratification and multimodal therapy.

Anatomical Segregation: The Infratentorial vs. Supratentorial Divide

Unlike adults—where tumors predominantly occur in the supratentorial cerebral hemispheres—pediatric brain tumors follow distinct anatomical distributions based on age:

• Infratentorial (Posterior Fossa) Tumors (50–60% between ages 1 and 10): Housed in the confined posterior fossa, these frequently compress the fourth ventricle to produce early obstructive hydrocephalus, cerebellar ataxia, and cranial nerve palsies. The classic entities include: Pilocytic Astrocytoma Medulloblastoma Ependymoma and Diffuse Intrinsic Pontine Glioma (DIPG/DMG)
• Supratentorial Tumors (40–50% overall; predominant in infancy and late adolescence): Located in the cerebral hemispheres or midline suprasellar/pineal regions. Common entities include: Hemispheric Low-/High-Grade Gliomas Craniopharyngiomas Choroid Plexus Tumors and Germ Cell Tumors

Low-Grade, Indolent Lesions (“The Well-Behaved Tumors”)

These WHO Grade 1 and Grade 2 lesions grow slowly, rarely metastasize along the neuraxis, and often carry excellent 10-year overall survival rates exceeding 90%.

High-Grade & Embryonal Tumors (“The Aggressive Spectrum”)

These tumors grow rapidly, exhibit high mitotic activity, and carry a propensity for leptomeningeal CSF dissemination (“drop metastases”), requiring rigorous staging of the entire craniospinal axis.

Other Specific Entities

• Choroid Plexus Tumors: Arise within the lateral ventricles in infants <1 year, causing profound CSF hypersecretion and communicating/obstructive hydrocephalus. Ranging from benign Choroid Plexus Papilloma (WHO Grade 1) to malignant Choroid Plexus Carcinoma (WHO Grade 3), often associated with germline TP53 mutations (Li-Fraumeni syndrome).
• Atypical Teratoid/Rhabdoid Tumor (AT/RT – WHO Grade 4): Highly aggressive embryonal tumor of infancy characterized by loss of SMARCB1 (INI1) expression, managed with intensive multi-agent chemotherapy regimens.

Comprehensive Summary Table

Tumor Entity	Peak Age	Classic Location	Grade	Core Molecular Marker	Primary Management & Outlook
Pilocytic Astrocytoma	5–14 yrs	Cerebellar hemisphere, optic pathway	WHO 1	KIAA1549-BRAF fusion	Surgical resection alone; >95% cure if GTR
Craniopharyngioma	5–14 yrs	Sellar / Suprasellar	WHO 1	CTNNB1 mutation	Surgery \pm focal radiation; high endocrine morbidity
Ganglioglioma / DNET	Any (children)	Temporal / Frontal cortex	WHO 1	BRAF V600E (subset)	Surgical excision; excellent seizure freedom
Medulloblastoma	3–8 yrs	Cerebellar vermis, 4th ventricle	WHO 4	WNT, SHH, Group 3, Group 4	GTR + Craniospinal Radiation + Chemo (60–90% cure)
Ependymoma	1–5 yrs	4th ventricle floor / recesses	WHO 2/3	PFA vs. PFB; ZFTA fusion	GTR critical; adjuvant focal radiotherapy
Diffuse Midline Glioma	5–9 yrs	Pons (DIPG), Thalamus	WHO 4	H3 K27M mutation	Inoperable; palliative focal radiation
Choroid Plexus Papilloma	<2 yrs	Lateral ventricle trigone	WHO 1	None specific	Curative surgical resection

A brain tumor diagnosis in a young child is overwhelming for any family, but clear information and a dedicated team can offer reassurance. At Surya Hospitals, our multidisciplinary team uses precision diagnostics and age-appropriate therapies to protect both your child’s life and long-term development.

Understanding Pediatric Brain Tumors

Brain lesions in young children vary significantly in their growth rates, locations, and behavioral traits.

• Benign vs. Malignant: Not all brain lesions are aggressive. Many low-grade tumors grow slowly and can be managed or cured with surgical resection alone.
• Location Matters: A tumor’s position dictates its symptoms—such as seizures, balance issues, or vision changes—and determines the safest surgical approach.
• Age-Specific Nuances: Developing brains require tailored treatment strategies to prevent long-term cognitive or physical side effects.

The Multidisciplinary Care Team

Managing complex pediatric brain lesions requires continuous coordination across multiple medical specialties.

Specialist	Role in Care
Pediatric Neurosurgeon	Evaluates surgical feasibility and performs precise tumor removal or biopsy.
Pediatric Hematologist-Oncologist	Designs and oversees chemotherapy regimens customized for developing children.
Pediatric Intensivist & ICU Team	Manages critical care, intracranial pressure, and post-operative recovery.
Pediatric Radiologist	Interprets high-resolution MRI scans to establish accurate differential diagnoses.
OR & Anesthesia Team	Ensures safe intraoperative monitoring tailored to young pediatric physiology.

Treatment Approaches: Surgery & Chemotherapy

Radiation therapy is generally deferred in children under three years old due to potential long-term effects on cognitive development, growth, vision, and endocrine function. Treatment focuses on safer, effective alternatives:

• Surgical Resection: The primary goal is often total or maximum safe removal of the tumor while preserving surrounding healthy brain tissue and neurological function.
• Targeted Chemotherapy: Serves as a primary treatment or adjuvant therapy to eliminate remaining tumor cells while protecting the developing brain from radiation toxicity.
• Symptom & Seizure Management: Specialized medications are utilized to control tumor-related epilepsy, reduce brain swelling, and maintain quality of life.

The Surya Hospital Advantage

Managing pediatric brain tumors demands meticulous attention to detail, advanced surgical infrastructure, and compassionate care. Our specialized team works together closely from initial diagnosis through long-term recovery to achieve the best possible outcomes for every child.