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KMID : 0357920060400000202
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Korean Journal of Pathology
2006 Volume.40 No. 0 p.202 ~ p.202
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Palisading Cutaneous Fibrous Hitiocytoma - Report of a Case
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Choi SJ
Kim L/Park IS/Han JY/Kim JM/Chu YC
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Abstract
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Palisading cutaneous fibrous histiocytoma refers to a unique and unusual variant of cutaneous fibrous histiocytomas. This neoplasm should be differentiated from other skin or soft tissue tumors with a palisading feature. We report a case of this tumor, arising in the finger of a 39-year-old man. The patient presented with a slowly growing, painless mass in the finger that had been present for 7 months. Grossly, the excised specimen showed a relatively well circumscribed and unencapsulated dermal tumor measuring 1.1×1.1×0.8 cm and abutting the subcutaneous adipose tissue. Cut surface of the tumor was yellowish white and solid without hemorrhage or necrosis. Microscopically, the tumor was histologically characterized by extensive myofibroblastic proliferation with predominant nuclear palisading mimicking of Verocay bodies, and small aggregates of foamy histiocytes. There was no cellular atypia and mitotic figures were not conspicuous. An immunohistochemical study was performed to confirm myofibroblastic nature of the tumor cells with diffuse strong positive for smooth muscle actin.
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