Intra- and extraosseous xanthomata associated with hyperlipidemia

Area of Science:

• Radiology
• Metabolic Disorders
• Dermatopathology

Background:

• Hyperlipidemia, characterized by elevated lipid levels, can manifest with various clinical signs.
• Xanthomata represent localized lipid deposits, often associated with specific types of hyperlipidemia.
• Understanding the radiologic features of xanthomata is crucial for diagnosis and management.

Observation:

• Presents three cases of xanthomata in patients with Type II and Type III hyperlipidemia.
• Reviews radiologic manifestations of xanthomata from presented and prior cases.
• Highlights the frequency of tendon xanthomata versus osseous xanthomata.

Findings:

• Tendon xanthomata are observed more frequently than osseous xanthomata.
• Osseous involvement (bone xanthomata) is exclusively reported in Type III hyperlipidemia.
• Osseous xanthomata can mimic soft-tissue masses or bone marrow disorders radiologically.

Implications:

• Radiologists and clinicians should consider osseous xanthomata in the differential diagnosis of bone lesions in Type III hyperlipidemia patients.
• The distinct radiologic presentation of osseous xanthomata aids in differentiating them from other bone pathologies.
• Early recognition of xanthomata associated with hyperlipidemia can guide metabolic management and prevent complications.