Necrobiotic xanthogranuloma and monoclonal gammopathy

paraproteinemia, multiple organ involvement, and an increased risk of developing lymphoproliferative malignancy, such as multiple myeloma, chronic lymphocytic leukemia, or Hodgkin and non-Hodgkin lymphoma. The present article describes a complicated case of a female patient diagnosed with multiple myeloma and necrobiotic xanthogranuloma whose serious health complications were not typical for the diagnosis of multiple myeloma. A thorough diagnostic algorithm and multidisciplinary cooperation of various experts led to the definitive diagnosis. The article also includes a description of the treatment strategy using combination therapy of daratumumab plus lenalidomide and dexamethasone with intravenous administration of immunoglobulins.