Podcast
Questions and Answers
Intraosseous lipomas are often diagnosed without the presence of any symptoms.
Intraosseous lipomas are often diagnosed without the presence of any symptoms.
True (A)
Intraosseous lipomas consistently exhibit a periosteal reaction on x-ray imaging.
Intraosseous lipomas consistently exhibit a periosteal reaction on x-ray imaging.
False (B)
On MRI, intraosseous lipomas display low signal on T1-weighted images.
On MRI, intraosseous lipomas display low signal on T1-weighted images.
False (B)
The classic location for intraosseous lipomas is the calcaneum.
The classic location for intraosseous lipomas is the calcaneum.
On CT, the fat within intraosseous lipomas has high Hounsfield units.
On CT, the fat within intraosseous lipomas has high Hounsfield units.
Flashcards
Intraosseous lipoma
Intraosseous lipoma
A benign bone tumor composed mainly of fat cells.
Where are intraosseous lipomas most commonly found?
Where are intraosseous lipomas most commonly found?
A common location for intraosseous lipomas.
X-ray appearance of intraosseous lipomas
X-ray appearance of intraosseous lipomas
On x-ray, intraosseous lipomas appear as a light area in the bone with a thin outer edge and no signs of bone growth.
MRI appearance of intraosseous lipomas
MRI appearance of intraosseous lipomas
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CT appearance of intraosseous lipomas
CT appearance of intraosseous lipomas
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Study Notes
Intraosseous Lipomas
- Benign lesions, frequently presenting with pain, but a third are found incidentally.
- Common location is the calcaneum, but can occur anywhere in the body.
- X-ray shows a lucent (radiolucent) bone lesion with a thin cortex and no periosteal reaction.
- Some lesions show dystrophic calcifications.
- MRI shows high signal on T1-weighted images and signal loss on fat-suppressed sequences.
- The presence of granulation tissue may show higher signal on MRI.
- Calcifications, if present, will appear as low signal on MRI.
- CT shows the fat within the lesion as having low to negative Hounsfield units.
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