Musculoskeletal CT Appearances

Lipoma CT Findings

• Superficial lipomas are small and well circumscribed, while deeper lipomas are more variable in shape and size
• Low fat density
• Between -65 and -120 HU
• Many lesions have thin internal septa
• Larger lesions may have linear striations
• May be hard to differentiate lipoma from liposarcoma

Other Information About Lipoma

Etiology:

• Unknown
• May be genetic

Epidemiology:

• Occurs between 40-60 years of age

Presentation:

• Small palpable mass
• Mass can be moved with slight pressure
• Usually not painful

Prognosis:

• Lipomas are benign