MR imaging findings in patients with bone-chip allografts

J. S. Jelinek, M. J. Kransdorf, R. P. Moser, H. T. Temple, M. K. Lenhart, B. H. Berrey

Research output: Contribution to journalArticle

10 Scopus citations

Abstract

Increasing use of MR to evaluate primary bone neoplasms has stimulated numerous articles on the initial assessment of these lesions. However, scant MR literature has been written about the postoperative MR appearance. We studied the MR appearance of lesions treated by curettage followed by packing with cancellous bone-chip allograft. We retrospectively reviewed the MR scans of 18 consecutive patients treated in this way. Pathologic diagnoses of these lesions were confirmed according to commonly accepted criteria. The allograft sites showed a distinctive pattern of speckled bright signal on T1-weighted images in eight cases. Thirteen of 18 grafts showed a whorled or speckled pattern of increased signal on the T2-weighted images. Only four allograft regions had predominantly low signal on both T1- and T2-weighted images. Two of 18 patients had recurrent tumor proved by open biopsy. MR images in these cases showed areas of homogeneous signal that replaced areas of speckled hyperintensity on both T1- and T2-weighted images. In both these recurrences the tumor had signal intensity similar to that seen on the preoperative MR study. We conclude that knowledge of the MR appearance of cancellous bone chip allografts is important to avoid misinterpreting areas of high signal on T1- or T2-weighted images as areas of recurrence of tumor and/or hemorrhage.

Original languageEnglish (US)
Pages (from-to)1257-1260
Number of pages4
JournalAmerican Journal of Roentgenology
Volume155
Issue number6
DOIs
StatePublished - Jan 1 1990

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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    Jelinek, J. S., Kransdorf, M. J., Moser, R. P., Temple, H. T., Lenhart, M. K., & Berrey, B. H. (1990). MR imaging findings in patients with bone-chip allografts. American Journal of Roentgenology, 155(6), 1257-1260. https://doi.org/10.2214/ajr.155.6.2122676