Vertebral pseudo-occlusion due to acute basilar artery thrombosis
Resumen: Sir,
The concept of acute arterial pseudo-occlusion (PO) defines a flow artifact in CT angiography (CTA) or digital subtraction angiography (DSA) that gives the appearance of occlusion at a certain level when the vessel is, in fact, permeable and the occlusion is localized at a more distal segment.[1] This finding is associated with a slow flow of unopacified blood due to the lack of drainage pathways.[2]
PO has been described in recent years at the extracranial internal carotid artery (ICA) by thrombi located mainly in the intracranial segment, appearing in up to 46% of these patients.[3] However, there are no previous reports of arterial PO in the posterior circulation.
A 56-year-old woman presented with new-onset gait unsteadiness, vomits, and a decreased level of consciousness, requiring orotracheal intubation. Unenhanced brain CT revealed a proximal hyperdense basilar artery and CTA showed an unopacified left vertebral artery that is filled distally (V4 and V3 segments) in a retrograde manner, suggesting proximal occlusion [Figure 1a and b]...

Idioma: Inglés
DOI: 10.4103/aian.AIAN_490_19
Año: 2020
Publicado en: ANNALS OF INDIAN ACADEMY OF NEUROLOGY 23, 4 (2020), 561-562
ISSN: 0972-2327

Factor impacto SCIMAGO:

Tipo y forma: (Published version)
Área (Departamento): Area Medicina (Dpto. Medicina, Psiqu. y Derm.)

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Exportado de SIDERAL (2020-11-19-12:43:21)

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 Record created 2020-11-19, last modified 2020-11-19

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