Skin & Soft Tissue: Dermatofibroma (Benign Fibrous Histiocytoma)

Basics

• Benign Proliferation of Dermal Fibroblasts
• Most Common in Adults

Presentation

• Solitary Firm Nodule
• Often Hyperpigmented
• Diameter 3-10 mm, Can Be Larger
• Fixed to Subcutaneous Tissue
• Dimple When Pinched
• Most Common on Lower Extremities

Diagnosis

• Clinical (Based on History and Physical Exam)
• May Require Biopsy if Uncertain

Treatment

• Generally Require No Treatment
• Indications for Excision:
  • Symptomatic
  • Concern for Malignancy
  • Patient Preference (Cosmesis)