Keywords: گلومرولونفریت فیبریلاسیون; Congo Red; fibrillary glomerulonephritis; amyloid; proteomics; mass spectrometry; DNAJB9; congophilic; AL amyloidosis; fibrillary deposits; kidney biopsy; laser microdissection; immunohistochemistry; misdiagnosis; biomarker; renal pathology;