Subungual Telangiectatic Granuloma

A 28-year-old woman presented with a rapidly growing mass on the right hallux that had occasionally bled. The tumor was excised and histological examination revealed a lobulated, well-vascularized mass with CD31-positive endothelium, loose connective tissue, and no cutaneous adnexal structures.

This is a case of (pyogenic) telangiectatic granuloma, a benign capillary tumor that often arises after trauma. It can also arise after tumor chemotherapy or rheumatological antibody therapy. These tumors tend to bleed and can become secondarily infected.

Subungual telangiectatic granuloma with a ruff-like border around its base.