Masson's tumor involving the hand: A case report

Area of Science:

• Vascular Surgery
• Dermatopathology
• Plastic Surgery

Background:

• Intravascular papillary endothelial hyperplasia (IPEH), or Masson's tumor, is a rare vascular tumor.
• Its etiology remains poorly understood, characterized by endothelial proliferation within a thrombus.

Observation:

• A 17-year-old female presented with a 6-month history of a painful mass on the volar aspect of her left 4th metacarpophalangeal joint.
• Radiological imaging was inconclusive in determining the nature of the mass.

Findings:

• Histopathological examination post-surgical excision confirmed the diagnosis of Masson's tumor.
• The patient achieved a good functional outcome with no recurrence after complete surgical removal.

Implications:

• IPEH constitutes 2%-4% of all vascular skin tumors and presents a diagnostic challenge due to lack of specific clinical or radiological features.
• Accurate histopathological diagnosis is crucial for differentiating IPEH from more aggressive tumors like angiosarcoma.
• Complete surgical excision is the primary treatment, though the role of radiotherapy and optimal excision margins require further investigation.