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Granular cell dermatofibroma: A potential diagnostic pitfall

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Dermatofibroma, also known as “fibrous histiocytoma”, is one of the most common cutaneous soft-tissue tumours. Many variants of dermatofibromas have been described and knowledge of these variations is important to… Click to show full abstract

Dermatofibroma, also known as “fibrous histiocytoma”, is one of the most common cutaneous soft-tissue tumours. Many variants of dermatofibromas have been described and knowledge of these variations is important to avoid a misdiagnosis of a possibly more aggressive tumour. Histological features of different variants can coexist in the same lesion, but typical common fibrous histiocytoma features are generally found, at least focally, in all cases. However, when cellular changes make up the majority of the lesion, the histopathological diagnosis can become more complex and requires immunohistochemical investigations for a correct nosographic classification. We report on the case of a cutaneous fibrous histiocytoma, “granular cell” variant, found on the left leg of a 74- year-old woman.

Keywords: granular cell; dermatofibroma potential; cell dermatofibroma; fibrous histiocytoma; granular

Journal Title: Dermatology Reports
Year Published: 2022

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