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Epiphyseal growth arrest lines MR findings

  • Lawrence Yao
    Correspondence
    Address reprint requests to: Lawrence Yao, MD, UCLA Department of Radiological Sciences, 200 UCLA Medical Plaza, Suite 165-45, Los Angeles, CA 90095-6952.
    Affiliations
    Department of Radiological Sciences, University of California at Los Angeles, Los Angeles, California, USA
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  • Leanne L. Seeger
    Affiliations
    Department of Radiological Sciences, University of California at Los Angeles, Los Angeles, California, USA
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      Abstract

      We present two cases in which MR exams revealed unusual, low signal intensity lines in the marrow space of epiphyses. These epiphyseal lines were smooth and regular, creating a bone-in-bone appearance. These lines were much more conspicuous on MR than on radiographs, partly because of adjacent alterations in trabecular architecture. A history of prolonged immobilization during childhood in both cases suggests that these lines represent growth arrest lines persisting in the epiphyses.

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