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[Orbital hemangiopericytoma: a case with involvement of the intraconal space]
M E Cabrera Vargas1, J Pérez Alvarez, C Díaz Arriaga
1Servicio de Oftalmología, Hospital Materno Infantil, Las Palmas de Gran Canaria, España.
Purpose/Methods:
We report a case of orbital hemangiopericytoma, in a 14 year-old boy. Neuroradiological findings, including those of computerized tomography (CT), magnetic resonance imaging (MRI), and ultrasonography are detailed.
Results/Conclusions:
Diagnostic imaging showed a well-circumscribed and solid mass with an intraconal location. The tumor was grossly purple, richly vascularized and encapsulated. The histological study revealed a hemangiopericytoma of borderline grade with hypercellularity and moderate number of mitotic figures. We emphasize the rarity of the orbital hemangiopericytoma specially when it is located within the muscle cone.
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