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. 2000 May-Jun;2(3):173-9.
doi: 10.1097/00125817-200005000-00003.

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

N U Ahn  1 , P D Sponseller, U M Ahn, L Nallamshetty, P S Rose, J M Buchowski, E S Garrett, B S Kuszyk, E K Fishman, S J Zinreich
Affiliations
Free article

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

N U Ahn et al. Genet Med. 2000 May-Jun.
Free article

Abstract

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.

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