The recurrent cerebellar astrocytoma.

Area of Science:

• Pediatric neuro-oncology
• Neurosurgery
• Clinical neurology

Background:

• Cerebellar astrocytomas are common pediatric brain tumors.
• Recurrence rates and long-term outcomes require careful monitoring.
• The Gilles grading system is used for posterior fossa gliomas.

Observation:

• Five pediatric cases with six recurrences of cerebellar astrocytoma were analyzed.
• Clinical progression was correlated with the Gilles classification system.
• Hydrocephalus was a significant indicator of tumor recurrence.

Findings:

• Tumor grading according to Gilles classification showed changes in some cases upon reoperation.
• Cerebellar astrocytomas demonstrated a capacity for regrowth despite initial apparent total removal.
• Delayed hydrocephalus was a reliable sign of tumor recurrence.

Implications:

• Histologic benignity does not preclude tumor regrowth in cerebellar astrocytomas.
• Routine follow-up computed tomography (CT) scans are essential for early detection of asymptomatic recurrences.
• This highlights the need for vigilant long-term surveillance in pediatric patients treated for cerebellar astrocytoma.