Neuroimaging assessment in Down syndrome: a pictorial review.

Down syndrome (DS), or trisomy 21, is the leading genetic cause of intellectual incapacity worldwide, with a reported incidence of about 1 in 1,000 to 1 in 1,100 live births. Besides the several commonly known physical features characteristic of this syndrome present at birth, DS may additionally affect every organ system. In addition, despite the large number of published papers concerning this syndrome, there is scarce literature focusing specifically in the typical neuroimaging features associated with this condition. The aim of this paper is to review and systematize the distinctive characteristics and abnormalities of the central nervous system, head and neck, and spine present in DS patients that should actively be searched for and evaluated by radiologists and/or neuroradiologists.

Primary Thrombectomy Versus Combined Mechanical Thrombectomy and Intravenous Thrombolysis in Large Vessel Occlusion Acute Ischemic Stroke.

Mechanical thrombectomy (MT) in combination with intravenous thrombolysis (IVT) is the standard of care for patients with acute ischemic stroke with anterior circulation large vessel occlusion. The particular benefit of IVT in these patients is unknown. We performed a retrospective analysis of patients submitted to MT at our center between January 2015 and June 2017. Functional outcome was prospectively assessed using modified Rankin scale (mRS) at 3 months. A total of 234 patients were enrolled, 152 (65%) in the combined treatment group and 82 (35%) in the direct MT group. Patients receiving combined treatment had a higher frequency of intracranial internal carotid artery occlusion (48 [31.6%] versus 16 [19.5%], P = .048) and significantly less strokes of cardioembolic etiology (72 [47.4%] versus 57 [69.5%], P = .01). Other baseline characteristics did not differ between the 2 groups. Good functional outcome at 3 months (mRS 0-2) was trending toward being higher in patients in the combined treatment group (98 [64.9%] versus 42 [52.5%], P = .066). Rates of symptomatic intracranial hemorrhage (5 [3.3%] versus 4 [4.9%], P = .723) and mortality (15 [9.9%] versus 14 [17.5%], P = .099) did not differ between groups. In multivariate logistic regression analysis, we did not find a statistically significant association between the use of IVT and any of the outcomes studied. Our results suggest that combined treatment carries similar effectiveness and safety than direct MT. Randomized controlled trials regarding this subject are warranted.