Dermatofibroma
A benign fibrous skin nodule typically arising on the extremities, often confused with dermatofibrosarcoma protuberans in clinical documentation.
Full Definition
Dermatofibroma is a common benign skin tumor composed of fibrous tissue that typically presents as a firm, brown nodule on the legs or arms. Histologically characterized by a proliferation of fibroblasts and histiocytes with overlying epidermal hyperplasia. The lesion often exhibits the 'dimple sign' when laterally compressed. While generally benign, accurate documentation is crucial as the name resembles the malignant dermatofibrosarcoma protuberans, leading to frequent editorial confusion in medical records.
Usage
Usage note: Editors should verify spelling to distinguish from the malignant dermatofibrosarcoma protuberans.
In Context
- "The 3-cm dermatofibroma on the patient's shin was excised with clear margins." — Pathology report
- "Histopathologic examination confirmed a benign dermatofibroma with no evidence of malignant transformation." — Consultation note