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病变位于皮下组织,因此,楼主的诊断有待商榷,需要有免疫组化的支持,例如CD68、FⅧa、SMA、MSA、desmin等,以下是《Enzinger and Weiss Soft Tissue Tumors, 5th Edition》中关于非典型性纤维黄色瘤的一些界定:
(1)Atypical fibroxanthomas typically occur on the exposed surface of the head and neck, particularly the nose, cheek, and ear of elderly individuals. Those rare atypical fibroxanthomas thought to occur on the extremities of young individuals are now thought to be examples of atypical fibrous histiocytomas.
(2)By definition, the tumor does not extensively involve the subcutis, nor invades deeper structures such as fascia or muscle.
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