martes, 26 de junio de 2018

Pathophysiology of carotid-cavernous fistulas in vascular Ehlers-Danlos syndrome: a retrospective cohort and comprehensive review | Orphanet Journal of Rare Diseases | Full Text

Pathophysiology of carotid-cavernous fistulas in vascular Ehlers-Danlos syndrome: a retrospective cohort and comprehensive review | Orphanet Journal of Rare Diseases | Full Text

Orphanet Journal of Rare Diseases

Pathophysiology of carotid-cavernous fistulas in vascular Ehlers-Danlos syndrome: a retrospective cohort and comprehensive review

  • Salma Adham,
  • Denis Trystram,
  • Juliette Albuisson,
  • Valérie Domigo,
  • Anne Legrand,
  • Xavier Jeunemaitre and
  • Michael FrankEmail author
Orphanet Journal of Rare Diseases201813:100
Received: 21 December 2017
Accepted: 13 June 2018
Published: 25 June 2018

Abstract

Background

Vascular Ehlers-Danlos syndrome (vEDS) is a rare condition characterized by connective tissue fragility. Direct spontaneous carotid-cavernous fistula (sCCF) is reportedly pathognomonic of vEDS. We conducted this study to understand the possible mechanisms of occurrence of sCCF in this subset of patients.

Methods

We conducted a retrospective analysis of a monocentric vEDS cohort along with a literature review regarding sCCF in this condition.

Results

Of 133 patients regularly followed in our centre between 2000 and 2017, 13 (9.8%) had a diagnosis of direct sCCF (92.3% female, median age 33.0 years, interquartile range (IQR) [26.0–39.5]). There were 7 Glycine missense and 6 splice-site variants but no variant leading to haploinsufficiency. The literature search identified 97 vEDS patients with direct sCCF (79.4% female, 7.2% sex not reported, median age 31.0 years, IQR [24.0–39.0]). Increased carotid circumferential wall stress, higher carotid distensibility and lower carotid intima-media thickness could contribute to a higher risk for direct sCCF in vEDS. There is no predictive factor for the occurrence of sCCF apart from female sex in vEDS.

Conclusions

In vEDS, anatomical and pathophysiological features of the intra-cavernous internal carotid artery make it prone to shunting in the cavernous sinus, due either to a spontaneous rupture or to a spontaneous dissection with pseudoaneurysm formation. Direct sCCF in seemingly healthy young individuals should be highly suggestive of vEDS and prompt further investigation.

Keywords

Vascular Ehlers-Danlos syndromeRare vascular diseaseGeneticsCarotid-cavernous fistulaNeurologyNeuroophthalmologyPathophysiology

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