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Abstract
Ossifying fibromyxoid tumor (OFMT) is an uncommon soft tissue neoplasm characterized by a combination of myxoid and/or fibrous stroma with areas of ossification. Although most authors postulate a neuroectodermal origin for this peculiar tumor, there is no agreement in the literature regarding its histogenesis. In this article, we present the immunohistochemical findings of a case of a 39-year-old white male with an OFMT of the soft tissue in the mandibular region. The tumor was positive to S-100 protein, glial fibrillary acidic protein, CD99, CD56 and negative to smooth muscle actin, cytokeratins AE1/AE3, epithelial membrane antigen, and CD68. To the best of our knowledge, this is the first case reported to be positive to CD56 and CD99. Immunoreactivity to these two antibodies, together with reactivity for S-100 protein and glial fibrillary acidic protein, suggests that OFMT is of a neuroectodermal origin. In our opinion, in the absence of reactivity to at least one neuroectodermal marker one should seriously question a diagnosis of OFMT.
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Affiliation(s)
- Dimosthenis Miliaras
- Laboratory of Histology, Embryology and Anthropology, Medical School, Aristotle University of Thessaloniki, GR 54006 Thessaloniki, Greece.
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Miliaras D, Meditskou S, Ketikidou M. Increased male proportion in fetal deaths and in fetuses with congenital malformations in Greece. Hum Reprod 2008; 23:2385; author reply 2385-6. [PMID: 18667488 DOI: 10.1093/humrep/den266] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Miliaras D, Ketikidou M, Pervana S. Osseous metaplasia in ovarian tumours: a case with serous cystadenoma. J Clin Pathol 2007; 60:582-3. [PMID: 17513522 PMCID: PMC1994532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
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