Cardiac fat-containing lesions are common in tuberous sclerosis complex

Area of Science:

• Genetics
• Cardiology
• Radiology

Background:

• Tuberous Sclerosis Complex (TSC) is a genetic disorder affecting multiple systems.
• Cardiac rhabdomyomas were previously considered the primary cardiac manifestation in TSC.
• Newer findings suggest cardiac fat-containing lesions in adult TSC patients.

Purpose of the Study:

• To investigate the prevalence of cardiac fat-containing lesions in individuals with TSC.
• To determine if these lesions are associated with gender, mutation type, or other TSC manifestations.
• To evaluate the potential diagnostic significance of cardiac fat lesions in TSC.

Main Methods:

• Retrospective review of chest CT scans from 73 individuals diagnosed with TSC.
• Analysis of cardiac fat-containing lesions.
• Statistical comparison between groups with and without cardiac fat findings.

Main Results:

• Cardiac fat-containing lesions were identified in approximately one-third of adolescent and adult TSC patients.
• No significant differences in lesion prevalence were observed based on gender or TSC mutation type.
• Individuals with cardiac fat lesions were more than twice as likely to have co-occurring abdominal TSC manifestations, such as angiomyolipomas.

Conclusions:

• Cardiac fat foci are a frequent finding in TSC patients and may warrant consideration as a diagnostic criterion.
• A potential association exists between cardiac fat-containing lesions and abdominal angiomyolipomas in TSC.
• Further research is necessary to elucidate the origin and clinical implications of these cardiac fat lesions.