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Ossifying fibromyxoid tumor of soft parts of the back

Ossifying fibromyxoid tumor of soft parts of the back We report a first case of ossifying fibromyxoid tumor of soft parts of the back, a 10×9.5×6 cm well‐circumscribed elevated subcutaneous tumor demarcated by an incomplete fibrous capsule with bone formation at its base. The tumor was composed of both myxomatous areas with spindle tumor cells and pseudoalveolar structures with oval tumor cells. The tumor cells had evenly sized, oval nuclei without atypia and slightly eosinophilic cytoplasm with intracellular vacuoles. Immunohistochemical studies revealed positivity for vimentin and focal positivity for S‐100 protein. Ultrastructural examination revealed a few filopodia‐like processes, discontinuous basal lamina and a few primitive cell junctions. Based on these immunohistochemical and ultrastructural results, this tumor may be related to Schwann's cells. There has been no recurrence 5 years after wide local excision. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Cutaneous Pathology Wiley

Ossifying fibromyxoid tumor of soft parts of the back

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References (15)

Publisher
Wiley
Copyright
Copyright © 1996 Wiley Subscription Services, Inc., A Wiley Company
ISSN
0303-6987
eISSN
1600-0560
DOI
10.1111/j.1600-0560.1996.tb01316.x
Publisher site
See Article on Publisher Site

Abstract

We report a first case of ossifying fibromyxoid tumor of soft parts of the back, a 10×9.5×6 cm well‐circumscribed elevated subcutaneous tumor demarcated by an incomplete fibrous capsule with bone formation at its base. The tumor was composed of both myxomatous areas with spindle tumor cells and pseudoalveolar structures with oval tumor cells. The tumor cells had evenly sized, oval nuclei without atypia and slightly eosinophilic cytoplasm with intracellular vacuoles. Immunohistochemical studies revealed positivity for vimentin and focal positivity for S‐100 protein. Ultrastructural examination revealed a few filopodia‐like processes, discontinuous basal lamina and a few primitive cell junctions. Based on these immunohistochemical and ultrastructural results, this tumor may be related to Schwann's cells. There has been no recurrence 5 years after wide local excision.

Journal

Journal of Cutaneous Pathology – Wiley

Published: Aug 1, 1996

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