Giant Muscle Invasive Dermatofibroma Clinically Mimicking a Malignant Tumor

<table class="figure-group"><tr class="fig-image" id="a"><td><object data="https://static.hindawi.com/articles/cridm/volume-2019/4503272/figures/4503272.fig.003a.svgz" name="4503272.fig.003a" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(a) </b>HE</td></tr><tr class="fig-image" id="b"><td><object data="https://static.hindawi.com/articles/cridm/volume-2019/4503272/figures/4503272.fig.003b.svgz" name="4503272.fig.003b" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(b) </b>SMA</td></tr><tr class="fig-image" id="c"><td><object data="https://static.hindawi.com/articles/cridm/volume-2019/4503272/figures/4503272.fig.003c.svgz" name="4503272.fig.003c" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(c) </b>CD68</td></tr><tr class="fig-image" id="d"><td><object data="https://static.hindawi.com/articles/cridm/volume-2019/4503272/figures/4503272.fig.003d.svgz" name="4503272.fig.003d" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(d) </b>Factor XIIIa</td></tr></table>

<div>(a) Proliferation of spindle cells with vague storiform growth pattern and basal cell hyperplasia of overlying epidermal cells noted on hematoxylin and eosin staining. (b–d) Immunohistochemical stain showing positivity for (b) SMA, (c) CD 68, and (d) factor XIIIa.</div>

Case Reports in Dermatological Medicine

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Figure 3

Figure 3: Giant Muscle Invasive Dermatofibroma Clinically Mimicking a Malignant Tumor 