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The sonographic pitfall of carotid collateralisation via the vasa vasorum
  1. João P Soares-Fernandes,
  2. Manuel Ribeiro,
  3. Zita Magalhães,
  4. Jaime F Rocha
  1. Department of Neuroradiology, Hospital de S Marcos, Braga, Portugal
  1. Dr João Paulo Soares-Fernandes, Serviço de Neurorradiologia, Hospital de S Marcos, Largo Engenheiro Carlos Amarante, Apartado 2242, 4701-965 Braga, Portugal; jsf{at}

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A 52-year-old man with obesity, type 2 diabetes mellitus and hypertension was admitted because of sudden onset of left hemiparesis and somnolence. Brain MRI disclosed a recent right thalamic stroke and multiple encephaloclastic lesions, suggestive of vascular sequelae. Carotid ultrasound demonstrated occlusion of the right internal carotid artery (ICA) and residual …

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  • Competing interests: None.