Dermatofibroma Diagnosis and Differentiation from
Skin Cancers
1. What is a dermatofibroma (DF)?
pathology
lesion
consitency
number
color: A skin lesion due to fibroblast proliferation, causing isolated or multiple firm, hyperpigmented nodules.
2. Where are dermatofibromas most commonly located?: On the lower extremities.
3. What is the typical size of a dermatofibroma?: Usually less than 1 cm in diameter.
4. What is a characteristic sign of a dermatofibroma when the lesion is pinched?-
: The 'dimple' or 'buttonhole' sign, where the center of the lesion dimples.
5. What is the etiology of dermatofibromas?: The etiology is unknown, but they may develop after
Skin Cancers
1. What is a dermatofibroma (DF)?
pathology
lesion
consitency
number
color: A skin lesion due to fibroblast proliferation, causing isolated or multiple firm, hyperpigmented nodules.
2. Where are dermatofibromas most commonly located?: On the lower extremities.
3. What is the typical size of a dermatofibroma?: Usually less than 1 cm in diameter.
4. What is a characteristic sign of a dermatofibroma when the lesion is pinched?-
: The 'dimple' or 'buttonhole' sign, where the center of the lesion dimples.
5. What is the etiology of dermatofibromas?: The etiology is unknown, but they may develop after
