A Subdermal Osteochondroma in a Young Girl

Figure 4

Safranin-O staining (25x) demonstrates calcified chondrocytes located just deep to the dermal area of the tissue (red). Masson’s Trichrome (25x) demonstrates the epidermal (red) and dermal (blue) layer that is directly adjacent to the chondrocytic area. H&E and Masson’s Trichrome (25x) demonstrate endochondral bone formation adjacent to a cartilaginous cap indicating the formation of an osteochondroma.