Granuloma Caused by Carbon Deposition in the Dermis

Pencil core granuloma is characterized by a delayed foreign-body reaction against retained fragments of pencil lead. Previous case reports presented pencil core granuloma resembling malignant melanoma, haemangioma, or soft tissue sarcoma. We present a case of pencil core granuloma arising from the p...

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Bibliographic Details
Main Authors: Rintaro Shibuya (Author), Yuichiro Endo (Author), Akihiro Fujisawa (Author), Miki Tanioka (Author), Yoshiki Miyachi (Author)
Format: Book
Published: Hindawi Limited, 2014-01-01T00:00:00Z.
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Summary:Pencil core granuloma is characterized by a delayed foreign-body reaction against retained fragments of pencil lead. Previous case reports presented pencil core granuloma resembling malignant melanoma, haemangioma, or soft tissue sarcoma. We present a case of pencil core granuloma arising from the palm 25 years after the initial injury. The patient presented a bluish nodule that had been present over 25 years before. The nodule initially measured 5 mm in diameter. However, five years before presentation, it suddenly enlarged to the size of 30 mm during six months. Computed tomography (CT) of the lesion revealed a linear radiopaque structure of 8 mm long with a mass on its distal end. Surgical resection revealed a bluish muddy mass and pencil lead. Histological examination revealed degenerative tissue with calcification surrounded by massive amounts of black granular material in the middle and lower dermis.
Item Description:2090-6463
2090-6471
10.1155/2014/686489