2019 American College of Rheumatology/European League Against Rheumatism classification criteria for IgG4-related disease by Wallaceet al

医学 风湿病 痹症科 内科学 病历 疾病 家庭医学 物理疗法
作者
Byung-Woo Yoo,Jason Jungsik Song,Yong‐Beom Park,Sang‐Won Lee
出处
期刊:Annals of the Rheumatic Diseases [BMJ]
卷期号:81 (9): e179-e179 被引量:11
标识
DOI:10.1136/annrheumdis-2020-217086
摘要

We read with interest the original article by Wallace et al proposing the new classification for IgG4-related disease (IgG4-RD). 1So far, the comprehensive diagnostic criteria for IgG4-RD (the comprehensive criteria) have been widely used, 2 but recently, the 2019 American College of Rheumatology (ACR) and the European League Against Rheumatism (EULAR) classification criteria for IgG4-RD have been developed and validated (the 2019 ACR/EULAR criteria).To determine the agreement rate between the comprehensive and the 2019 ACR/EULAR criteria, we applied the 2019 ACR/EULAR criteria to 40 patients with definite IgG4-RD based on the comprehensive criteria and retrospectively reviewed their medical records.Based on the inclusion criteria of the 2019 ACR/EULAR criteria, total points of ≥20 indicated the classification of IgG4-RD.The mean age of the patients was 60.2 years, and 29 patients (72.5%) were men.With respect to the immunostaining items, no points were assigned to five patients for lymph node biopsy, although they exhibited both IgG4+/IgG+ cells ratio of >40% and IgG4+ cells/high power field (HPF) of >10 on immunostaining.Finally, 1 of 40 patients (2.5%) with definite IgG4-RD was not reclassified as having IgG4-RD according to the 2019 ACR/EULAR criteria.The 2019 ACR/EULAR criteria do not approve the results of immunostaining if the disease involves the lymph nodes.We described five patients who received no points with respect to the immunostaining items in the 2019 ACR/EULAR criteria in table 1.Patient 1 exhibited neither information on typical histopathological features of IgG4-RD nor definite evidence of IgG-RD involvement in the chest, pancreas and biliary tree, kidney or retroperitoneum.Thus, patient 1 obtained only 4 points and could not be reclassified as having IgG4-RD despite the increased concentration of serum IgG4 (4 points).Patient 2 exhibited dense lymphocytic infiltrate and storiform fibrosis in the biopsy samples (13 points) and the highest serum IgG4 concentration range (11 points).Patients 3 and 4 exhibited no information on typical histopathological features of IgG4-RD.However, they had the highest serum IgG4 concentration range and definite evidence of IgG-RD involvement in the chest and kidney on a CT scan.Patient 5 exhibited only dense lymphocytic infiltrate in the biopsy sample (4 points) and the highest serum IgG4 concentration range (11 points).In addition, this patient showed abnormalities in one set of glands (6 points) and in the renal pelvic soft tissue (8 points) on a CT scan.In this study, we elucidated that 97.5% of the patients with definite IgG4-RD were also reclassified as having IgG4-RD
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