Pagetoid

Pagetoid is a term used in dermatology to refer to "upward spreading" of melanocytes into the epidermis. It is uncommon and a possible indication of a precancerous or cancerous condition. Cells display pagetoid growth when they invade the upper epidermis from below. Squamous cell carcinoma, melanoma in situ, Pagetoid Bowen disease and other carcinomas can all display pagetoid growth.