Intravascular Papillary Endothelial Hyperplasia (Masson Tumor) of the Right Thumb: A Case Report and Literature Review.

The Masson tumor is a benign vascular tumor named after Pierre Masson, the French pathologist who originally described it in 1923, terming it "hémangio-endothéliome végétant intravasculaire." It is a rare tumor that can arise in any area throughout the body. However, the exact cause of Masson tumor remains poorly understood, and its diagnosis is challenging and difficult to distinguish from several other soft-tissue tumors. In this report, we report a case of Masson tumor arising in the right thumb that is only the second reported case in the hand in Saudi Arabia.

First Dorsal Metacarpal Artery Flap for Thumb Reconstruction Postresection of Subungual Squamous Cell Carcinoma.

Subungual squamous cell carcinoma refers to rare tumors that arise from the digits, most commonly in the thumb and big toe. These tumors are frequently diagnosed late due to them presenting as chronic wounds or wart infections. They are low-grade tumors that rarely have nodal involvement, and their treatment options include surgical resection with or without amputation, and radiotherapy for patients who cannot tolerate surgery. We present a case of a patient who underwent tumor excision and immediate reconstruction of the digit.