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Deprecated: Implicit conversion from float 312.4 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Hum+Pathol 2015 ; 46 (9): 1306-14 Nephropedia Template TP
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Granulomatous and Lymphocytic Interstitial Lung Disease (GLILD): A Spectrum of Pulmonary Histopathological Lesions in Common Variable Immunodeficiency (CVID) - Histological and Immunohistochemical Analysis of 16 cases #MMPMID26138782
Rao N; Mackinnon AC; Routes JM
Hum Pathol 2015[Sep]; 46 (9): 1306-14 PMID26138782show ga
Common Variable Immunodeficiency (CVID) is a primary immunodeficiency of unknown etiology characterized by low serum IgG, a decreased ability to make specific antibodies, and variable T cell defects. Approximately 20% of patients with CVID develop clinical evidence of a diffuse parenchymal lung disease with a constellation of histopathological findings termed granulomatous and lymphocytic interstitial lung disease (GLILD). In this study, we characterized the histological and immunohistochemical features in a series of 16 cases diagnosed by open lung biopsy. Peribronchiolar and interstitial lymphocytic infiltration, granulomatous inflammation and organizing pneumonia were consistent features; interstitial fibrosis with architectural remodeling was also found in a subgroup of patients. By immunohistochemistry, a predominance of CD4+ T lymphocytes with variable numbers of CD8+ T cells and B cells were present, with a striking absence of FOXP3 positive T regulatory cells. This heretofore unrecognized immunohistochemical finding, needs further investigation for a potential role in the pathogenesis of the condition. The presence of interstitial fibrosis with or without architectural remodeling in a subset of patients also needs additional study, for effect on prognosis.