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Primary angiosarcoma of the brain in a child
Boleslaw Lach1, Maher Hassounah, Yasser Khafaga
1Department of Pathology and Laboratory Medicine, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia. boleklach2@hotmail.com
Fetal and Pediatric Pathology
|July 18, 2008
Summary
This study details a rare pediatric brain tumor, a Dabska tumor, exhibiting an intravascular papillary pattern. It suggests a possible malignant transformation within a pre-existing vascular malformation.
Area of Science:
- Neuropathology
- Pediatric Oncology
- Vascular Malformations
Background:
- Primary brain angiosarcomas are rare pediatric tumors.
- The Dabska tumor is characterized by an intravascular papillary endothelial proliferation.
- Vascular malformations can predispose to neoplastic development.
Observation:
- A pediatric case presented with a primary brain angiosarcoma showing a striking intravascular papillary pattern.
- The tumor was associated with multifocal intravascular papillary endothelial hyperplasia, hemangioma, and large veins.
- Adjacent brain tissue revealed telangiectasias, calcified dysplastic arteries, and gliosis.
Findings:
- The co-localization of tumor and vascular malformations suggests a developmental link.
- The angiosarcoma displayed features consistent with the Dabska tumor.
- Dysplastic arteries and veins were noted within the tumor and surrounding tissue.
Implications:
- This case highlights the potential for malignant transformation within pre-existing vascular malformations.
- It raises the possibility of endothelial papillary hyperplasia evolving into angiosarcoma.
- Further research is needed to understand the pathogenesis of Dabska tumors and their association with vascular malformations.
