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Primary mediastinal hemangiopericytoma with fatal outcome in a child
S C Simonton1, P E Swanson, J Watterson
1Department of Pathology, Children's Health Care-St Paul (Minn) 55102, USA.
Insights
Mediastinal hemangiopericytoma is a rare childhood tumor. This case highlights a fatal outcome in a 4-year-old due to the tumor
Area of Science:
- Pediatric Oncology
- Surgical Pathology
Background:
- Hemangiopericytoma is a rare vascular tumor.
- Mediastinal involvement is exceptionally uncommon in pediatric cases.
Observation:
- A 4-year-old child presented with a large mediastinal mass.
- The tumor's size and location led to fatal perioperative bleeding.
Findings:
- Pathologic diagnosis confirmed hemangiopericytoma via microscopy and immunohistochemistry.
- This case's aggressive course contrasts with generally favorable infantile hemangiopericytoma outcomes.
Implications:
- Mediastinal hemangiopericytoma should be considered in pediatric differential diagnoses for large mediastinal masses.
- Early recognition and management are critical for potentially improving outcomes in rare pediatric mediastinal tumors.
Abstract:
Hemangiopericytoma occurs infrequently in children, and mediastinal sites are exceedingly rare. We report a case of mediastinal hemangiopericytoma in a 4-year-old child, which resulted in the patient's death due to large size, anatomic location, and associated perioperative bleeding. The pathologic diagnosis was established on the basis of light microscopic, immunohistochemical, and electron microscopic features. The presentation and clinical course of this case contrast with those of congenital or infantile hemangiopericytoma, which generally has a favorable outcome. Hemangiopericytoma should be considered in the differential diagnosis of large mediastinal masses in children.