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An Unusual Meningothelial Element in a Hairy Polyp of the Hard Palate.
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HOME > J Pathol Transl Med > Volume 42(5); 2008 > Article
Case Report An Unusual Meningothelial Element in a Hairy Polyp of the Hard Palate.
Si Hyong Jang, Kyueng Whan Min, Woong Na, Se Min Jang, Seung Sam Paik
Journal of Pathology and Translational Medicine 2008;42(5):311-313
DOI: https://doi.org/
Department of Pathology, College of Medicine, Hanyang University, Seoul, Korea. sspaik@hanyang.ac.kr
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Hairy polyps are a rare malformations of bigerminal origin that comprise of both ectodermal and mesodermal elements. Meningothelial elements are an extremely rare pathologic finding in hairy polyps. Here we report a case of a hairy polyp with a meningothelial element, which originated from the hard palate. A 1-year-old boy was evaluated for an intraoral mass accompanied by multiple congenital anomalies. A small polypoid mass was noted at the midline of the hard palate. The lesion had central fibroconnective tissue with an unusual stromal component showing reticulated anastomosing pseudovascular patterns. Immunohistochemical staining of the cells lining the pseudovascular spaces and the interstitial cells revealed vimentin and epithelial membrane antigen positivity.

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