case_images: PMC3985194_01
case_images: H&E stain. Skin with infiltrate of mast cells in the deep dermis.
case_images: CRIPA2014-412656.001.jpg
case_images: PMC3985194_01_CRIPA2014-412656.001.jpg
case_images: fig1
case_images: On microscopic examination, the mass was composed of a dense monomorphic infiltrate of tumor cells in the dermis and subcutaneous tissue (Figure 1).
case_images: H&E stain. Mast cells with pale blue cytoplasm and round to oval nuclei.
case_images: CRIPA2014-412656.002.jpg
case_images: PMC3985194_01_CRIPA2014-412656.002.jpg
case_images: fig2
case_images: Cells were medium sized with regular nuclear contours and abundant pale blue cytoplasm (Figure 2).
case_images: Toluidine blue stain. Mast cells with purple metachromatic granules in the cytoplasm.
case_images: CRIPA2014-412656.003.jpg
case_images: PMC3985194_01_CRIPA2014-412656.003.jpg
case_images: fig3
case_images: Toluidine blue stain (Figure 3) and purple on Giemsa stain. The infiltrating cells were CD117 positive on immunohistochemistry (Figure 4).
case_images: CD 117 IHC. Membrane staining of mast cells.
case_images: CRIPA2014-412656.004.jpg
case_images: PMC3985194_01_CRIPA2014-412656.004.jpg
case_images: fig4
case_images: Toluidine blue stain (Figure 3) and purple on Giemsa stain. The infiltrating cells were CD117 positive on immunohistochemistry (Figure 4).