Tissue Characterization in Cardiac Amyloidosis
2022
Veronica Musetti | Francesco Greco | Vincenzo Castiglione | Alberto Aimo | Cataldo Palmieri | Dario Genovesi | Assuero Giorgetti | Michele Emdin | Giuseppe Vergaro | Liam A. McDonnell | Angela Pucci
Cardiac amyloidosis (CA) has long been considered a rare disease, but recent advancements in diagnostic tools have led to a reconsideration of the epidemiology of CA. Amyloid light-chain (AL) and transthyretin (ATTR) amyloidoses are the most common forms of cardiac amyloidosis. Due to the distinct treatments and the different prognoses, amyloid typing is crucial. Although a non-biopsy diagnosis can be obtained in ATTR amyloidosis when certain diagnostic criteria are fulfilled, tissue characterization still represents the gold standard for the diagnosis and typing of CA, particularly in AL amyloidosis. The present review focuses on the status of tissue characterization in cardiac amyloidosis, from histochemistry to immunohistochemistry and mass spectrometry, as well as on its future directions.
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