An unusual dermatofibroma over the distal interphalangeal joint

Abstract

Introduction: Volar dermatofibroma over the distal interphalangeal (DIP) joint is extremely rare compared with more common tumors of the hand, such as giant cell tumors of the tendon sheath and ganglion cysts. Clinical image report: A 37-year-old male with no underlying disease presented with an abnormal mass over the DIP joint of the volar site of the third digit of the left hand for 5 months. With histopathological analysis by excisional biopsy, the patient was diagnosed with dermatofibroma. Conclusion: The current gold standard for a definite diagnosis is identifying the histopathological analysis by tissue biopsy.

Keywords

• Cutaneous nodule
• Dermatofibroma
• Distal interphalangeal joint
• Soft tissue tumor