Necrobiotic xanthogranuloma (also known as 'necrobiotic xanthogranuloma with paraproteinemia') is a multisystem disease that affects older adults, and is characterized by prominent skin findings.:707 Necrobiotic xanthogranuloma (also known as 'necrobiotic xanthogranuloma with paraproteinemia') is a multisystem disease that affects older adults, and is characterized by prominent skin findings.:707