Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, NE, USA.
Am J Clin Pathol. 2013 Sep;140(3):395-402. doi: 10.1309/AJCPFH0SJ6YILXJU.
To assess the association between Rosai-Dorfman disease (RDD) and IgG4-related disease (IgG4-RD).
We studied the number of IgG4-positive plasma cells and the IgG4/IgG ratio in 32 biopsy specimens (13 nodal, 19 extranodal) from 29 patients with RDD and compared the findings with those in IgG4-RD of the pancreas and reactive lymph nodes. We also assessed the number of FOXP3-positive regulatory T cells (Tregs) since they were reported to be increased in IgG4-RD.
We found that RDD cases had much lower numbers of IgG4-positive plasma cells and lower IgG4/IgG ratios compared with IgG4-RD but were similar to reactive lymph nodes. Furthermore, RDD had lower numbers of FOXP3-positive Tregs than did IgG4-RD. There were no significant differences in the number of IgG4-positive plasma cells and the IgG4/IgG ratio between the nodal and extranodal RDD cases.
Our study suggests that RDD does not belong in the spectrum of IgG4-RD.
评估 Rosai-Dorfman 病(RDD)与 IgG4 相关疾病(IgG4-RD)之间的关联。
我们研究了 29 例 RDD 患者的 32 份活检标本(13 份淋巴结,19 份结外)中 IgG4 阳性浆细胞的数量和 IgG4/IgG 比值,并将这些结果与 IgG4-RD 胰腺和反应性淋巴结进行了比较。我们还评估了 FOXP3 阳性调节性 T 细胞(Treg)的数量,因为有报道称 IgG4-RD 中 Treg 数量增加。
与 IgG4-RD 相比,RDD 病例的 IgG4 阳性浆细胞数量和 IgG4/IgG 比值明显较低,但与反应性淋巴结相似。此外,RDD 的 FOXP3 阳性 Treg 数量低于 IgG4-RD。淋巴结和结外 RDD 病例之间 IgG4 阳性浆细胞数量和 IgG4/IgG 比值无显著差异。
我们的研究表明,RDD 不属于 IgG4-RD 范畴。