[Periocular Necrobiotic Xanthogranuloma with Mono- and Biclonal Gammopathy]. / Periokuläres nekrobiotisches Xanthogranulom bei mono- und biklonaler Gammopathie.

Necrobiotic xanthogranuloma is a very rare disease with granulomatous lesions of the skin with possible association with paraproteinemia. We report two cases of orbital necrobiotic xanthogranuloma in patients with mono/biclonal gammopathy of undetermined significance. Both patients underwent successful conservative treatment.