Histologic remission of cardiac amyloidosis: a case report
Matthew R Nelson1, Louis A Lanza, Craig B Reeder
1Division of Cardiovascular Diseases, Mayo Clinic Scottsdale, Arizona, USA.
Insights
Cardiac amyloidosis survival depends on heart involvement. Echocardiographic wall thinning after treatment suggests complete reversal of amyloid deposits is possible with timely intervention.
Area of Science:
- Cardiology
- Oncology
- Pathology
Background:
- Cardiac involvement is the primary determinant of survival in amyloid light chain amyloidosis.
- Echocardiographic assessment of cardiac wall thickness changes shows potential as a survival predictor.
- Previous observations noted wall thickness regression and heart failure resolution in some hematologic responders.
Observation:
- This study presents a case of immunoglobulin light chain cardiac amyloidosis.
- The patient received treatment, leading to echocardiographic evidence of cardiac wall thinning.
- Cardiac biopsies confirmed complete histologic remission of amyloid deposits.
Findings:
- Treatment resulted in significant echocardiographic wall thinning.
- Histologic examination of cardiac biopsies revealed complete resolution of amyloid fibrils.
- This indicates a potential mechanism for treatment response in cardiac amyloidosis.
Implications:
- Complete reversal of cardiac amyloid deposition may be achievable with appropriately timed treatment.
- This finding opens new avenues for managing cardiac amyloidosis and improving patient outcomes.
- Further research into the reversibility of amyloidosis is warranted.
Abstract:
The main determinant of survival in amyloid light chain amyloidosis is cardiac involvement. The rate of change in wall thickness may be a strong predictor of survival. After treatment, some hematologic responders have had documented regression of wall thickness by echocardiography with resolution of heart failure symptoms. Herein, we demonstrate a case of treated immunoglobulin light chain cardiac amyloidosis with echocardiographic wall thinning and cardiac biopsies demonstrating complete histologic remission. This observation suggests a mechanism of treatment response and that with appropriately timed treatment, cardiac deposition of amyloid fibrils can be completely reversed.
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