Orbital Solitary Fibrous Tumor: A Case Report and Review of the Literatures

Solitary fibrous tumors (SFTs) are uncommon, benign, and slowly progressing spindle-cell tumors. First reported in 1931, SFT accounts for 1% of all orbital tumors and can affect any orbital space. Proptosis and palpable mass are common clinical manifestations. SFTs should be included in the first line of differential diagnosis when the mass shows markedly enhancing pattern similar to the internal carotid artery on postcontrast computed tomography (CT) or magnetic resonance (MR) images. Cluster of differentiation 34 (CD34) is the most important diagnostic marker for SFT. Herein, we report a case of orbital SFT and demonstrate its image characteristics, with review of the literatures.