PMC5509185_01
Magnetic resonance imaging reveals a mass in the right proximal clavicle
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F1
Magnetic resonance imaging revealed a 2.8 cm x 2.4 cm x 2.4 cm mass in the right proximal clavicle [Figure 1].
(a) Histopathology shows tumor cells in an inflammatory background (H and E, x400). (b) CD1a immunostain (x200)
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F2
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].