Congenital dermatofibrosarcoma protuberans in a seven-month-old infant initially misdiagnosed as infantile myofibroma: A case report

Figure 1 Initial incisional biopsy (misdiagnosed as infantile myofibroma). A: Low power hematoxylin and eosin image showing a small biopsy specimen composed of spindle cell proliferation (× 40 magnification, scale bar = 500 μm); B: High power hematoxylin and eosin image demonstrating fascicular/nodular arrangement of bland spindle cells without the classic storiform pattern (× 200 magnification, scale bar = 100 μm). Immunohistochemistry showed CD34-, vimentin+, and S100-.