|
Medical Definition of Atypical fibroxanthoma
1. A solitary, often ulcerated, small cutaneous benign tumour composed of foamy histiocytes, spindle cells, and bizarre giant cells; usually found on the exposed skin of older people; microscopically, atypical fibroxanthoma closely resembles malignant fibrous histiocytoma, but originates in the dermis. (05 Mar 2000)