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  • Title: Orbital solitary fibrous tumor: report of two cases and literature review.
    Author: Schellini SA, Hoyama E, Marques ME, Abreu ES, Yamashita S.
    Journal: Jpn J Ophthalmol; 2003; 47(4):415-8. PubMed ID: 12842215.
    Abstract:
    BACKGROUND: Solitary fibrous tumor (SFT) is a rare, benign, and very uncommon lesion in the orbit. Because of its complex and variable clinical and histological appearance the SFT is often misdiagnosed. CASES: Two new cases of orbital SFT are reported, one in a man and the other in a woman, both unilateral and in the superomedial orbit. OBSERVATIONS: Clinical and tomographical evaluations were conducted and the lesions were excised. The histological evaluation showed the tumors were composed of spindle-shaped cells within collagen bundles and vascular channels. Immunohistochemical staining was positive for CD 34 and negative for S-100 protein. CONCLUSION: Immunohistochemical study is an important adjuvant in determining the SFT diagnosis. Long-term follow-up is necessary because of the possibility of SFT recurrence after excision.
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