Dural ectasia in the Marfan syndrome: MR and CT findings and criteria

Nicholas U. Ahn, Paul D. Sponseller, Uri M. Ahn, Leelakrishna Nallamshetty, Peter S. Rose, Jacob M. Buchowski, Elizabeth S. Garrett, Brian S. Kuszyk, Elliot K. Fishman, S. James Zinreich

Research output: Contribution to journalArticlepeer-review

75 Scopus citations


Purpose: To create criteria for detecting dural ectasia on MR or CT images in adult Marfan patients. Methods: Images were analyzed using a workstation. Parameters that predicted dural ectasia were included in our criteria. Results: Major criteria include: (1) width of dural sac below L5 > width above L4; (2) anterior sacral meningocele. Minor criteria include: (1) L5 nerve root sleeve diameter > 6.5 mm and (2) S1 scalloping > 3.5. Dural ectasia exists if 1 major or 2 minor criteria are present. Conclusion: MR and CT diagnose dural ectasia with high specificity and sensitivity. Our criteria accurately diagnose dural ectasia in adult Marfan patients.

Original languageEnglish (US)
Pages (from-to)173-179
Number of pages7
JournalGenetics in Medicine
Issue number3
StatePublished - 2000


  • Connective tissue disease
  • Diagnosis criteria
  • Dural ectasia
  • Marfan syndrome
  • Spinal deformity

ASJC Scopus subject areas

  • Genetics(clinical)


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