“…Specifically, the erythrocyte sedimentation rate (ESR) is elevated in nearly 90% of RDD cases and polyclonal hypergammaglobulinemia is present in approximately 80–90% of cases according to several studies [ 1 , 4 – 8 ]. Other less common laboratory findings associated with RDD include elevated C-reactive protein (CRP), anemia, neutrophilia, leukocytosis, thrombocytopenia, arthropathy, arthritis, and elevated rheumatoid factor [ 1 , 4 , 5 , 7 , 8 , 10 , 14 , 16 ]. The types of anemias are many and may include normocytic or microcytic varieties [ 2 ].…”