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
Intraosseous lipomas consistently exhibit a periosteal reaction on x-ray imaging.
Intraosseous lipomas consistently exhibit a periosteal reaction on x-ray imaging.
False
On MRI, intraosseous lipomas display low signal on T1-weighted images.
On MRI, intraosseous lipomas display low signal on T1-weighted images.
False
The classic location for intraosseous lipomas is the calcaneum.
The classic location for intraosseous lipomas is the calcaneum.
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On CT, the fat within intraosseous lipomas has high Hounsfield units.
On CT, the fat within intraosseous lipomas has high Hounsfield units.
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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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Description
This quiz explores intraosseous lipomas, a type of benign bone lesion often associated with pain or discovered incidentally. Key characteristics include their common location in the calcaneum and imaging findings such as radiolucent bone lesions on X-ray and specific signals on MRI. Test your knowledge on the diagnosis and features of these lesions.
