Erdheim-Chester disease: typical radiological bone features for a rare xanthogranulomatosis

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Figure 1 .

Skeletal bone radiographs showed bilateral and symmetrical cortical osteosclerosis of the diaphysial and metaphysial regions of the legs, corresponding to the increased uptake in bone scan, but clinically asymptomatic.

Figure 2 .

In T₁ spin echo weighted sequences the histiocytosis infiltration appeared as metaphyso-diaphysial low signal lesions, corresponding to the osteosclerotic lesions in standard radiographs.