Confirming Suspicion of ATTR-CM: Invasive Techniques1-3

Transthyretin Amyloid Cardiomyopathy   >   Diagnosis of ATTR-CM   >   Invasive Diagnostic Techniques   >   Invasive Techniques
CARDIAC TISSUE BIOPSY
  • Document the extent of amyloid infiltration
  • Provide definitive etiologic classification of the amyloidogenic protein
  • Achieve a definitive classification to help rule out AL amyloidosis
Congo Red staining of myocardial tissue from a patient with amyloid cardiomyopathy.
A) Light microscopy, and B) polarized light microscopy, 400X magnification.