Hypocellular Medallion‐like Dermal Dendrocyte Hamartoma on the Abdomen of a 25 year old Male

Medallion‐like dermal dendrocyte hamartoma is a rare congenital lesion that is more commonly seen in females. It often presents at birth on the neck or upper trunk as a well‐circumscribed, atrophic patch with wrinkling of the overlying skin. Clinically, the differential diagnosis includes atrophoderma, anetoderma, and congenital atrophic dermatofibrosarcoma protuberans. Histologic findings show epidermal atrophy and dermal spindle cell proliferation that is CD34 positive, along with Factor XIIIa in the original reports. Due to this CD34 positivity, another name for the lesion is plaque‐like CD34+ dermal fibroma. We present a unique patient case as he is male and the lesion is located on his abdomen. Further reports and studies need to be done for thorough understanding of this neoplasm.

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