ArticleZhong nan da xue xue bao. Yi xue ban = Journal of Central South University. Medical sciences2023
Clinical characteristics of IgG4
Article in Zhong nan da xue xue bao. Yi xue ban = Journal of Central South University. Medical sciences, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
objectivesImmunoglobulin G4-related diseases (IgG4-RD) is a rare autoimmune disease, and there is no specific diagnostic test for patients with lung involvement yet. This study aims to summarize the clinical characteristics of IgG4-RD with lung involvement and improve the understanding and diagnosis of this disease.
methodsAll patients diagnosed with IgG4-RD in the Second Xiangya Hospital from December 2014 to February 2022 were re-diagnosed according to the recommendations of Chinese Expert Consensus on the Diagnosis and Treatment of IGG4-Related Diseases in 2021. The clinical data of 14 IgG4-RD patients with pulmonary abnormalities were collected and analyzed.
resultsAmong the 14 patients, 11 were males and 3 were females, and the median age of diagnosis was 66 (22-82) years old. Six cases had respiratory symptoms such as cough, sputum and short breath. Extrapulmonary involvement was the most common in the glands of head and neck (6/14), followed by pancreas and bile duct (4/14). Elevated serum IgG4 level was found in all patients, and most (11/14) were accompanied by abnormal inflammatory markers. Patients' pulmonary imaging findings were diverse, the most common performances were mediastinal/hilar lymphadenopathy (12/14), followed by multiple pulmonary nodules (9/14), patchy density enhancement (7/14) and the increased broncho vascular bundles (6/14). Lung biopsy was performed in 9 patients, their pathology results showed lymphoplasmic cell infiltration, 5 cases of them had interstitial fibrosis, 2 cases with phlebitis, and extrapulmonary biopsy was performed in 8 patients. Immunohistochemical results of all the patients showed that the number of IgG4+ plasma cells was more than 10 per high magnification, and the ratio of IgG4/IgG was more than 40%. For treatment, 12 patients received hormone therapy, and 5 patients combined immunosuppressive therapy with hormone. 10 patients were in remission after treatment, while 2 patients were progressed.
conclusionsIgG4-RD with lung involvement is rare and has no specific clinical manifestation. Its pulmonary imaging is diverse. Diagnosis for it should combine with serum IgG4 level and pathological examination. Glucocorticoid is the first line treatment, and combination with immunosuppressant can help prevent disease recurrence.
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