Fibrillary glomerulonephritis (FGN) is a rare glomerular disease characterized by the deposition of fibrils within the mesangium and glomerular basement membrane. Most cases are idiopathic, but it can be linked to autoimmune diseases, neoplasms, and infections. There is limited evidence on the best treatment approach, and many patients progress to end-stage kidney disease. The authors present a case of FGN in a patient with Sjögren's syndrome (SS) and primary biliary cholangitis (PBC), highlighting a successful clinical outcome.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11731311PMC
http://dx.doi.org/10.7759/cureus.75701DOI Listing

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Fibrillary glomerulonephritis (FGN) is a rare glomerular disease characterized by the deposition of fibrils within the mesangium and glomerular basement membrane. Most cases are idiopathic, but it can be linked to autoimmune diseases, neoplasms, and infections. There is limited evidence on the best treatment approach, and many patients progress to end-stage kidney disease.

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Fibrillary glomerulonephritis is a rare glomerular disease with some correlations between this condition alongside viral infections, malignancy, and autoimmune pathologies. However, the question regarding the pathogenesis is whether patients who develop fibrillary glomerulonephritis do so irrespective of these other pathologies or whether such pathologies induce fibrillary glomerulonephritis through an unknown mechanism. As such, attempts have been made to create associations with this disease to demonstrate further understanding.

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  • - The optimization of electron microscopy (EM) tissue processing protocols is urgent due to the rising number of renal biopsies needing EM for accurate diagnoses, with traditional methods taking 48-52 hours compared to a faster 8-hour microwave-based method.
  • - Concerns exist about the quality of the fast-processing EM (FEM) potentially affecting diagnoses; however, this study provides evidence that FEM produces comparably high-resolution images to the conventional EM (CEM).
  • - Both prospective and retrospective analyses showed no significant differences between FEM and CEM in terms of image quality and structural features of kidney tissues, indicating that FEM can be a reliable alternative for quicker diagnoses.
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Introduction: Fibrillary glomerulonephritis (FGN) is a rare form of glomerular disease that accounts for less than 1 percent of all renal biopsies. It is characterized by pathognomonic electron microscopy findings of fibrillar deposits in the mesangium and glomerular capillary walls. FGN was initially considered to be an idiopathic disorder.

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