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Revista Colombiana de Nefrología
On-line version ISSN 2500-5006
Abstract
NIETO-RIOS, John Fredy et al. Diagnosis of AA renal amyloid by mass spectrometry in a patient with a severe abdominal chronic inflammatory process. Rev. colom. nefrol. [online]. 2022, vol.9, n.2, 401. Epub Aug 01, 2022. ISSN 2500-5006. https://doi.org/10.22265/acnef.9.2.562.
Introduction
Amyloidosis is a rare disease, resulting from the accumulation and deposition of insoluble proteins in tissues or organs. This disease may involve the kidney, resulting in nephrotic syndrome and renal failure. The amyloidosis has been associated with systemic involvement, with AL amyloidosis and AA amyloidosis being the most common. The last is associated with various inflammatory disorders as chronic infections and autoimmune diseases. A multidisciplinary approach is required to the diagnosis (hematologic, cardiac, autoimmune, infectious, neoplastic) and in cases of renal involvement, a kidney biopsy with complete study of light microscopy, special stains including congo red, immunofluorescence, electron microscopy is essential for diagnosis. In cases where the cause cannot be stablished, mass spectrometry is practical tool to the identification of the correct type of amyloidosis.
Purpose
Here, we present a patient with a chronic and severe abdominal inflammatory process that progressed to a nephrotic syndrome due to AA amyloidosis, in which mass spectrometry helped to clarify the diagnosis.
Case presentation
Here, we present a patient with a chronic and severe abdominal inflammatory process that progressed to a nephrotic syndrome due to AA amyloidosis, in which mass spectrometry helped to clarify the diagnosis
Discussion and conclusion
Mass spectrometry is considered a useful diagnostic test to confirm the etiology of amyloidosis, especially if other methods are insufficient to establish it.
Keywords : amyloidosis; serum amyloid A; amyloidosis AL; nephrotic syndrome; mass spectrometry..