Related Experiment Video
Updated: May 8, 2026

Catheter-based Endovascular Angioplasty for Fibrosing Mediastinitis-associated Pulmonary Vein Stenosis
Published on: August 26, 2025
Fabry's disease with LVOT obstruction: diagnosis and management
Jacob R Blount1, James K Wu, Matthew W Martinez
1University of South Florida Morsani College of Medicine, USF LVHN SELECT Program, Lehigh Valley Health Network, Tampa, Florida.
Insights
Genetic testing identified Fabry's disease, an HCM mimic, in a patient with severe left ventricular outflow tract obstruction. This case highlights genetic testing
Area of Science:
- Cardiology
- Genetics
- Rare Diseases
Background:
- Hypertrophic cardiomyopathy (HCM) is a genetic heart condition.
- Left ventricular outflow tract (LVOT) obstruction is a common complication of HCM.
Observation:
- A 46-year-old male presented with symptoms of severe LVOT obstruction.
- Initial diagnosis was HCM, but genetic testing revealed Fabry's disease.
- The patient had no other clinical manifestations of Fabry's disease.
Findings:
- Genetic testing is crucial for differentiating HCM mimics.
- Fabry's disease can present solely with cardiac manifestations, mimicking HCM.
- Surgical myectomy provided symptom relief for the patient.
Implications:
- This case underscores the importance of genetic testing in diagnosing cardiac conditions.
- Early diagnosis of Fabry's disease can guide appropriate management.
- Recognizing HCM mimics prevents misdiagnosis and ensures timely, effective treatment.
Abstract:
A 46-year-old male was diagnosed with hypertrophic cardiomyopathy (HCM) and severe left ventricular outflow tract (LVOT) obstruction. Genetic testing revealed that this was a "mimic of HCM" and the true diagnosis was Fabry's disease, although there were no other clinical features of Fabry's. Despite maximal medical therapy he remained symptomatic from the outflow tract gradient and required surgical myectomy for symptom relief. This case illustrates the diagnosis of an HCM mimic by genetic testing.
Related Concept Videos
Mitral Stenosis III: Medical Management
Mitral Regurgitation III: Medical Management
Mitral Stenosis II: Clinical features and Diagnostic Tests
Aortic Regurgitation III: Medical Management
Mitral Stenosis IV: Nursing Management
Mitral Valve Prolapse II: Assessment and Management

