Plantar Dermatofibroma Misdiagnosed as Viral Warts / 대한피부과학회지

Dermatofibroma is a common benign fibrohistiocytic tumor. It can occur anywhere on the body surface, but it has a propensity for the extremities. However, dermatofibroma may show a wide variety of clinicopathologic variants and so it is often misdiagnosed. Our case was a 13-year-old male who presented with a 1-year history of a solitary skin-colored hyperkeratotic nodule on the right sole. The nodule had recurred after topical therapy for viral wart. Histopathologic examination of the patient's lesion revealed a poorly circumscribed nodular tumor composed of collagen bundles, fibroblasts and histocytes, which was all consistent with plantar dermatofibroma.

A Case of Plantar Dermatofibroma / 대한피부과학회지

Dermatofibroma is a common benign fibrohistiocytic tumor that occurs anywhere on the body surface, with a propensity for the extremities, usually the lower legs. A 31-year-old male presented with a skin-colored nodule measured 0.5 cm in diameter on the sole of hisfoot. A biopsy specimen revealed a poorly defined, nonencapsulated, nodular tumor composed of collagen bundles, fibroblasts and histiocytes, which were consistent with dermatofibroma. Herein we report a case of dermatofibroma on the sole.