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• Vol.64 No.4
• CLINICA NEUROL, 64: 296−299, 2024
• Vol.64 No.4 contents

Brief Clinical Note

A case of suspected vertebral artery stump syndrome assessed by CT angiography

Miharu Yanagida, M.D.^1）, Yasushi Hosoi, M.D.^1）, Tatsuhiro Kawano, M.D.^1）, Yusuke Otake, M.D.^1）,Hiramatsu Hisaya, M.D.^2） and Michiko Ito, M.D.^1）

¹⁾Department of Neurology, Hamamatsu Medical Center
²⁾Department of Neurosurgery, Hamamatsu Medical Center

A 55-year-old man developed ischemic stroke in the bilateral cerebellar hemispheres and bilateral occipital lobes. He was admitted to our hospital 17 months later with recurrent ischemic stroke in the posterior circulation. The left vertebral artery (VA) was occluded on brain magnetic resonance angiography but was visualized with a delay on continuous three-phase CT angiography (CTA). Conventional angiography confirmed a to-and-fro blood flow pattern at the distal end of the left VA, therefore the patient was diagnosed with VA stump syndrome (VASS). VASS is a recurrent posterior circulation ischemic stroke caused by thrombi in an occluded unilateral VA. VASS should be suspected in patients with unilateral VA occlusion and repeated posterior-circulation ischemic stroke. The diagnostic criteria for VASS include confirmation of VA occlusion and the presence of an antegrade flow component at the distal end. In this case, the presence of collateral circulation in the VA was suspected based on CTA findings, leading to the diagnosis of VASS. It was thus suggested that devising the imaging method of CTA may help diagnose VASS.
Full Text of this Article in Japanese PDF (1615K)

(CLINICA NEUROL, 64: 296−299, 2024)
key words: vertebral artery occlusion, cerebral embolism, vertebral artery stump syndrome, CT angiography

(Received: 16-Aug-23)