Multifocal and Metameric Spinal Cord Arteriovenous Malformations

Abstract

We describe 19 (16.0%) multiple vascular malformations (AVMs) in 119 spinal cord arteriovenous malformations (SCAVMs).

The associated lesions were eight vertebral vascular malformations, two cutaneous, four limbs, four radicular AVMs, three bifocal SCAVMs; one patient had a bifocal cord lesion associated with vertebral and limb localisations. Various syndromic associations were seen: nine Cobb, two Klippel-Trenaunay-Weber, one Parkes Weber. An additional subgroup of unclassified associations is constituted by seven cases with bifocal intradural uni or multimetamerk lesions.

In our SCAVMs series, the incidence of multiple vascular lesions is high, in particular multifocal intradural malformations. Metameric distribution is the most frequent type of multiplicity. Identification of the myelomeric level involved in SCAVM allows segmental link between various lesions of mesodermal or neural crest origin to be discussed.

Keywords

spinal cord arteriovenous malformation radicular arteriovenous malformations multiple arteriovenous malformations Cobb syndrome Klippel-Trenaunay-Weber syndrome

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