PMC4006551_01
A bluish tumor of 30 mm in diameter was observed on the palm of her right hand.
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A 67-year-old woman was referred to our department for evaluation of a bluish nodule on the palm of her right hand (Figure 1, arrow).
Contrast-enhanced CT showing a linear radiopaque structure of 8 mm long with a mass on its distal end.
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Computed tomography (CT) of the lesion revealed a linear radiopaque structure of 8 mm long with a mass on its distal end (Figure 2, arrow).
A black-pigmented fragment of 28 x 30 mm along with a lead was removed.
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fig3
The total excision of the tumor was performed, revealing a bluish muddy mass that contained a piece of material that resembled pencil lead (Figure 3).
HE stain of the specimen revealed degenerative tissue with calcification and granulomas associated with histiocytes laden with fragments of black graphite (Hematoxylin eosin stain, x100).
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Histiocytes laden with fragments of black graphite were also observed at the peripheral of the degenerative tissue (Figure 4).