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J Neurol Surg A Cent Eur Neurosurg 2017; 78(03): 245-249
DOI: 10.1055/s-0036-1596058
Original Article
Georg Thieme Verlag KG Stuttgart · New York

Tarlov Cyst Is Correlated with a Short Broad Terminal of the Thecal Sac

Chaoran Xie
1   Department of Neurosurgery, Wenzhou Medical University Second Affiliated Hospital, Wenzhou, China
,
Xuesheng Zheng
2   Department of Neurosurgery, Shanghai Jiaotong University School of Medicine, Xinhua Hospital, Shanghai, China
,
Nu Zhang
1   Department of Neurosurgery, Wenzhou Medical University Second Affiliated Hospital, Wenzhou, China
› Author Affiliations
Further Information

Publication History

13 May 2016

26 August 2016

Publication Date:
27 December 2016 (online)

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Abstract

Background In clinical practice, we noted that the end section of the thecal sac is apparently different in patients with Tarlov cyst compared with that of the normal population. We conducted this clinical study based on magnetic resonance imaging (MRI).

Methods Our study included 30 patients with Tarlov cyst and 30 healthy volunteers as the control. The L4, L5 cross-section areas, the L4, L5 anteroposterior diameters, and the terminal length of the thecal sac were measured from the lumbosacral spine MRI.

Results The L4, L5 cross-section areas and the L4, L5 anteroposterior diameters are larger for the Tarlov cyst patients than the controls, but the terminal length of the thecal sac is shorter.

Conclusion The Tarlov cyst is correlated with a short broad end of the thecal sac. Possibly, this anatomical variant is a causative factor of Tarlov cyst.

Keywords

Tarlov cyst - etiology - thecal sac
 

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