ePlasty: Vol. 19
Intraneural Masson Tumor of the Hand
Alexander Lauder, MD, Rex C. Bentley, MD, and Suhail K. Mithani, MD

Duke University Medical Center, Durham, NC

Correspondence: lauder.alexander@gmail.com
Keywords: Masson tumor, intravascular papillary endothelial hyperplasia, IPEH, hand mass, intraneural vascular tumor
Level of Evidence: V

DESCRIPTION

A 19-year-old man presented with a mass of the volar third web space after blunt trauma. It was 3 × 2 cm, tender, noncompressible, nonpulsatile, and without associated neurovascular deficits. Surgical exploration revealed the mass to be within a common digital nerve. Pathology was consistent with a Masson tumor.

QUESTIONS

1. What is a Masson tumor?

2. What is the typical presentation?

3. How are these tumors diagnosed?

4. What makes this case unique and what is the typical treatment?

DISCUSSION

A Masson tumor, or intravascular papillary endothelial hyperplasia (IPEH), is an exaggerated reparative phenomenon representing recanalization and organization of a thrombus within a normal vessel, vascular malformation, or hematoma. It is a rare tumor accounting for approximately 2% to 4% of vascular tumors of the skin and subcutaneous tissue.1 The dia .......