[Thrombocytosis and essential thrombocythemia in childhood]

Area of Science:

• Pediatric Hematology
• Oncology
• Clinical Pathology

Context:

• Thrombocytosis, elevated platelet count, is a frequent finding in pediatric patients.
• Secondary thrombocytosis, reactive to other conditions, is more common than primary forms.
• Primary thrombocytosis in children can be inherited (familial) or acquired (essential thrombocythemia).

Purpose:

• To provide diagnostic guidance for pediatric thrombocytosis.
• To recommend appropriate biological tests for evaluating thrombocytosis in children.
• To differentiate between secondary and primary causes of elevated platelet counts in pediatric cases.

Summary:

• This review focuses on the diagnostic approach to thrombocytosis in children.
• It distinguishes between secondary thrombocytosis, common and multifactorial, and rare primary forms (essential thrombocythemia, familial).
• Key biological investigations are suggested to aid in accurate diagnosis and management.

Impact:

• Aids clinicians in the timely and accurate diagnosis of pediatric thrombocytosis.
• Facilitates appropriate patient management by identifying underlying causes.
• Contributes to the understanding of thrombocytosis epidemiology and diagnostics in pediatric populations.