case_images: PMC5509185_01
case_images: Magnetic resonance imaging reveals a mass in the right proximal clavicle
case_images: TCMJ-29-62-g001.jpg
case_images: PMC5509185_01_TCMJ-29-62-g001.jpg
case_images: F1
case_images: Magnetic resonance imaging revealed a 2.8 cm x 2.4 cm x 2.4 cm mass in the right proximal clavicle [Figure 1].
case_images: (a) Histopathology shows tumor cells in an inflammatory background (H and E, x400). (b) CD1a immunostain (x200)
case_images: TCMJ-29-62-g002.jpg
case_images: PMC5509185_01_TCMJ-29-62-g002.jpg
case_images: F2
case_images: Histopathologic examination revealed round to oval-shaped tumor cells with reniform nuclei, fine chromatin, and focal nuclear grooving, admixed with eosinophilic and other inflammatory infiltrates [Figure 2a]. The tumor cells were diffusely positive for S-100 protein and CD1a [Figure 2b].