AL Cardiac Amyloidosis Presenting as Grade 3 ATTR Mimicry on Scintigraphy

Key Result

Grade 3 uptake in AL amyloidosis indicates advanced myocardial infiltration and poor prognosis, necessitating hematologic screening to avoid misinterpretation.

Key Points

• To understand the implications of Grade 3 uptake in AL cardiac amyloidosis during scintigraphy.
• Analyzed cardiac scintigraphy results indicating Grade 3 uptake.
• Conducted hematologic screenings prior to scintigraphy interpretation.
• Evaluated the risk of misclassifying AL as transthyretin amyloidosis.
• Grade 3 uptake in AL indicates advanced myocardial infiltration.
• Misclassification of severe AL can occur without proper screenings.
• Advanced infiltration is associated with a poor prognosis.