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  • Title: Extradural thoracic arteriovenous malformation in a patient with Klippel-Trenaunay-Weber syndrome: case report.
    Author: Alexander MJ, Grossi PM, Spetzler RF, McDougall CG.
    Journal: Neurosurgery; 2002 Nov; 51(5):1275-8; discussion 1278-9. PubMed ID: 12383373.
    Abstract:
    OBJECTIVE AND IMPORTANCE: Spinal cord involvement in Klippel-Trenaunay-Weber (KTW) syndrome is rare. Cases of intradural spinal cord arteriovenous malformations (AVMs) have been associated with this syndrome. Likewise, cases of epidural hemangioma and angiomyolipoma have been reported to occur at the same segmental level as cutaneous hemangioma in KTW syndrome. This report details a rare case of an extradural thoracic AVM in a patient with KTW syndrome. CLINICAL PRESENTATION: A 30-year-old man presented with a 10-month history of progressive myelopathy, bilateral lower-extremity weakness, and numbness, with the right side affected more than the left. His symptoms had progressed to the point that he was unable to walk. The patient had the characteristic manifestations of KTW syndrome, including numerous cutaneous angiomas and cavernomas, limb hypertrophy and syndactyly, and limb venous malformations. A magnetic resonance imaging scan and subsequent angiogram demonstrated a large extradural AVM causing cord compression at the T3-T4 levels. INTERVENTION: The patient underwent two separate endovascular procedures, including embolization of upper thoracic and thyrocervical trunk feeders. Subsequently, he underwent T1-T4 laminectomy and microsurgical excision of the AVM. Clinically, the patient improved such that he could walk without assistance. CONCLUSION: KTW syndrome represents a spectrum of clinical presentations. Although involvement of the spinal cord is uncommon, the manifestations of this syndrome may include both intradural and extradural AVMs in addition to various tumors.
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