PURPOSE: To report the clinicopathologic findings in patient with optic nerve sheath hemangiopericytoma. DESIGN: Clinicopathologic report. METHODS: The clinical, histologic, and immunohistochemical findings of a patient with optic nerve sheath hemangiopericytoma were reviewed. RESULTS: An excisional biopsy of an optic nerve sheath tumor from a 35-year-old woman showed a staghorn vascular pattern consisting of CD34-positive tumor cells. CONCLUSIONS: Hemangiopericytoma may occur rarely in the optic nerve sheath.
PURPOSE: To report the clinicopathologic findings in patient with optic nerve sheath hemangiopericytoma. DESIGN: Clinicopathologic report. METHODS: The clinical, histologic, and immunohistochemical findings of a patient with optic nerve sheath hemangiopericytoma were reviewed. RESULTS: An excisional biopsy of an optic nerve sheath tumor from a 35-year-old woman showed a staghorn vascular pattern consisting of CD34-positive tumor cells. CONCLUSIONS: Hemangiopericytoma may occur rarely in the optic nerve sheath.