Mediastinal epithelioid solitary fibrous tumor.
Abstract
We describe the case of a 74-year-old man with a mediastinal tumor composed predominantly of epithelioid cells exhibiting histopathologic and immunohistochemical features intermediate between those of a solitary fibrous tumor and those of a cellular adenomatoid tumor. We discuss the differential diagnosis and possible histogenesis of this unusual neoplasm, and we propose the term epithelioid solitary fibrous tumor for this entity.
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