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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Angiomatoid "malignant fibrous histiocytoma": an immunohistochemical study indicative of myoid differentiation.

Six cases of angiomatoid malignant fibrous histiocytoma (MFH), the rarest subtype of MFH, have been studied immunohistochemically using a broad panel of commercially available antisera in formalin-fixed, paraffin-embedded tissue in an attempt to define the pattern of differentiation shown by this unusual tumor. As has been reported in the more common types of MFH, no evidence of histiocytic differentiation was found. However, five cases strongly expressed desmin (DER-11) and two also expressed muscle actin (HHF 35). All tissues examined were negative for myoglobin and alpha-smooth muscle actin. These results provide good evidence for some sort of myogenic or possibly myofibroblastic differentiation in angiomatoid MFH. Given its clinicopathologically and immunohistochemically distinctive features, which are very different from the other variants of MFH, redesignation of angiomatoid MFH as a low-grade myogenic sarcoma of uncertain histogenesis is tentatively proposed. The new term angiomatoid myosarcoma is suggested.[1]

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