Plantar xanthoma is a condition when xanthomatous deposits occur within the plantar fascia.
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Clinical presentation
Plantar xanthomas are usually asymptomatic, although in some instances may result in vague pain and may also have unfavorable cosmetic effects.
Pathology
Xanthomas consist of localized collections of tissue histiocytes containing lipids, most frequently in the skin and subcutaneous tissues. As with xanthomas elsewhere, they are a feature of several types of primary hyperlipidemias.
Radiographic features
Plain radiograph
Plantar xanthomas can be seen as soft-tissue masses without calcification.
MRI
MRI can show fusiform tendinous or aponeurotic enlargement with heterogeneous signal intensity with
- small foci of increased tendinous signal intensity corresponding to xanthomatous deposits
- trabeculated low-signal-intensity areas representing the remaining tendinous fascicles
- characteristic speckled or reticulated appearance on both T1WI and T2WI
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