Abstract:The histopathological features of atypical fibroxanthoma (AFX) overlap with those of poorly differentiated carcinoma, melanoma and leiomyosarcoma in the skin. As there are no specific stains to identify AFX, the diagnosis is essentially one of exclusion and requires completion of a panel of immunostains. Recently, it has been suggested that the macrophage/monocyte-specific marker CD163 is of value in identifying AFX. To investigate this claim, 57 AFX were stained for CD163. Only 21 of 57 (37%) of AFX stained p… Show more
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