Abstract
Solitary fibrous tumor (SFT) belongs to a group of mesenchymal tumors, first described as a primary spindle cell tumor of the pleura in 1931. Recently, SFT has been reported in various locations with no relation to serosal surface. We describe two such cases in unusual sites of orbit and nasal cavity. Histopathologically, the tumors had a disorganized or patternless arrangement of spindle cells in a collagenous background and prominent vascular channels of varying sizes. Immunohistochemically both tumours showed CD 34 positivity. The two patients had benign clinical course with limited follow-up. SFT should be included in the differential diagnosis of spindle cell tumors arising in the nasal cavity and orbit.
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