Tram-track sign (bone)

The tram-track sign is sometimes seen on delayed bone scan images. They can appear as symmetric linear increase in tracer accumulation along diaphyseal and metaphyseal surfaces of long bones. Corresponding to similar periosteal reaction seen on radiographs. Bone scan findings precede radiographic findings by many weeks. 

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Article information

rID: 62600
Section: Signs
Synonyms or Alternate Spellings:

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