A Regional Network Organization for Thrombectomy for Acute Ischemic Stroke in the Anterior Circulation; Timing, Safety, and Effectiveness.

BACKGROUND: Mechanical thrombectomy (MT) in association with intravenous thrombolysis is recommended for treatment of acute ischemic stroke (AIS), with large vessel occlusion (LVO) in the anterior circulation. Because MT is only available in comprehensive stroke centers (CSC), the challenge of stroke organization is to ensure equitable access to the fastest endovascular suite. Our aim was to evaluate the feasibility, efficacy, and safety of MT in patients initially managed in 1 CSC (mothership), compared with patients first managed in primary stroke center (PSC), and then transferred to the CSC for MT (drip-and-ship). METHODS: We retrospectively analyzed 179 consecutive patients (93 in the mothership group and 86 in the drip-and-ship group), with AIS secondary to LVO in the anterior cerebral circulation and a clinical-radiological mismatch (NIHSS ≥ 8 and DWI-ASPECT score ≥5), up to 6 hours after symptoms onset. We evaluated 3-month functional modified Rankin scale (mRS), periprocedural time management, mortality, and symptomatic intracranial haemorrhage (sICH). RESULTS: Despite significant longer process time in the drip-and-ship group, mRS ≤ 2 at 3 months (39.8% versus 44.1%, P = .562), Thrombolysis in cerebral infarction 2b-3 (85% versus 78%, P = .256), and sICH (7.0% versus 9.7%, P = .515) were similar in both group regardless of baseline clinical or radiological characteristics. After multivariate logistic regression, the predictive factors for favorable outcome were age (odds ratio [OR] -5years= 1.32, P < .001), initial NIHSS (OR -5points = 1.59, P = .010), absence of diabetes (OR = 3.35, P = .075), and the delay magnetic resonance imagining-puncture (OR -30min = 1.16, P = .048). CONCLUSIONS: Our study showed encouraging results from a regional protocol of MT comparing patients transferred from PSC or brought directly in CSC.

Cortical abnormalities on MRI: what a neurologist should know.

Cerebral cortical lesions develop in many disorders including vascular diseases, metabolic disorders, inflammatory diseases, tumours, infections and genetic disorders. In some diseases, the cortical involvement is typical and sometimes isolated, while in others the cortical lesions occur only occasionally (often alongside other typical extra-cortical lesions).In this review, we discuss mainly the MRI characteristics of cortical lesions encountered in different disorders. From a radiological perspective, identifying the origin of a cortical lesion depends on the exact localisation of signal changes, the presence of extra-cortical lesions, the signal changes on different MRI sequences and the evolution of the radiological abnormalities over time. These must be interpreted in light of the history and clinical state of the patient, and other radiological and non-radiological examinations.

An MRI review of acquired corpus callosum lesions.

Lesions of the corpus callosum (CC) are seen in a multitude of disorders including vascular diseases, metabolic disorders, tumours, demyelinating diseases, trauma and infections. In some diseases, CC involvement is typical and sometimes isolated, while in other diseases CC lesions are seen only occasionally in the presence of other typical extra-callosal abnormalities. In this review, we will mainly discuss the MRI characteristics of acquired lesions involving the CC. Identification of the origin of the CC lesion depends on the exact localisation of the lesion(s) inside the CC, presence of other lesions seen outside the CC, signal changes on different MRI sequences, evolution over time of the radiological abnormalities, history and clinical state of the patient, and other radiological and non-radiological examinations.

Symptomatic isolated internal carotid artery occlusion with initial medical management: a monocentric cohort.

BACKGROUND: Symptomatic isolated carotid artery occlusions (ICAO) can lead to disability, recurrent stroke, and mortality, but natural history and best therapeutic management remain poorly known. The objective of this study was to describe our cohort of ICAO patients with an initial medical management. METHODS: We conducted a retrospective study including consecutive patients admitted to our Comprehensive Stroke Center for ICAO within 24 h after stroke onset between January 2016 and September 2018. Patients with immediate endovascular therapy (EVT) were excluded. Medical treatment was based on anticoagulation (delayed by 24 h if intravenous thrombolysis was performed). 'Rescue' EVT was considered if first-week neurological deterioration (FWND) occurred. RESULTS: Fifty-six patients were included, with a median National Institutes of Health Stroke Scale (NIHSS) of 3. Eleven patients (20%) had FWND during the first week, four benefited from rescue EVT. A mismatch volume > 40 cc on initial perfusion imaging and FLAIR vascular hyperintensities were associated with FWND (p = 0.007 and p = 0.009, respectively). Thirty-eight patients (69%) had a good outcome (modified Rankin Scale mRS 0-2) at 3 months, 36 (69%) had an excellent outcome (mRS 0-1). Seventeen patients (38%) had carotid patency on 3-month control imaging. Recurrences occurred in six (13%) of the survivors (mean follow-up: 13.6 months). CONCLUSION: Our results suggest that the prognosis of patients with acute ICAO was favorable with a medical strategy, albeit a substantial rate of FWND and recurrence. FWND was well predicted by a core-perfusion mismatch volume > 40 cc. Randomized controlled trials are necessary to assess the benefit of EVT in ICAO.

Outcome in 53 patients with spinal cord cavernomas.

BACKGROUND: Prevalence of cerebral cavernomas in the general population is close to 0.5%. In contrast, SCCs are rare. The aim of this study was to determine the outcome of SCC in a large sample of patients. METHODS: Clinical and neuroradiologic findings were retrospectively collected in a multicentric study. Diagnosis was based on pathologic criteria or MR findings. RESULTS: Fifty-three patients were included (26 males, 27 females). Mean age at onset of symptoms was 40.2 years (11-80 years). Initial symptoms were progressive (32) or acute myelopathy (20). One case was asymptomatic. Triggering factors were found in 14 of the patients (26%). Clinical symptoms were related to spinal cord compression (27) and hemorrhage (22). Spinal cord cavernoma was thoracic in 41 cases and cervical in 12. Mean size of the lesions was 16.3 mm (3-54 mm). In the 40 surgical patients, long-term follow-up was available in 37 cases for a mean time of 7.3 years (0.4-50 years). During the follow-up period, 20 patients improved, 6 remained on their preoperative baseline, and 11 got worse. Surgical improvement was more often found in posterior rather than anterior location. Using McCormick classification, 22 patients were autonomous (grades 1-2), 12 handicapped (grade 3), and 3 bedridden (grade 4) at the end of the follow-up. CONCLUSIONS: This study has defined clinical and MR patterns of spinal cavernomas. Surgery lastingly improved more than half of the patients.

Monocentric Prospective Study into the Sustained Effect of Incobotulinumtoxin A (XEOMIN®) Botulinum Toxin in Chronic Refractory Migraine.

Refractory chronic migraine is a disabling disorder impacting quality of life. BOTOX® (Onabotulinumtoxin A) is approved as a prophylactic treatment of chronic migraine in patients unresponsive to at least three prior preventive treatments. The objective of this study was to determine the prophylactic effect of 145 U XEOMIN® (Incobotulinumtoxin A) injected at 31 specific sites in adult patients with refractory chronic migraine. Sixty-one patients (8 men and 53 women, mean age 50) with migraine were recruited, including 20 patients with isolated chronic migraine, 18 patients with chronic migraine associating tension-type headache, 12 patients with migraine associating medication overuse headache, and 11 patients with episodic disabling migraine. The mean number of injections and duration of treatment per patient was 3.5 (range 2⁻13) and 21 (6⁻68) months, respectively. From baseline to first injection, 44 patients (73%) had >50% reduction in frequency of migraine episodes, 29 patients (48%) showed >50% reduction in number of headache days, and 28 patients (46%) had a >50% reduction in drug intake. Stable response for all three parameters was observed after the last injection. XEOMIN® thus seems to represent an effective and sustained prophylactic treatment of chronic migraine.

Cerebrospinal Fluid Alzheimer's Disease Biomarkers in Cerebral Amyloid Angiopathy-Related Inflammation.

BACKGROUND: Decreased cerebrospinal fluid (CSF) amyloid-ß 1-40 (Aß40) and amyloid-ß 1-42 (Aß42) and increased total and phosphorylated tau (t-tau, p-tau) concentrations have been described in cerebral amyloid angiopathy (CAA). OBJECTIVE: Our aim was to analyze these biomarkers in patients with CAA-related inflammation (CAA-I). METHODS: We prospectively recruited nine patients with acute phase CAA-I fulfilling Chung criteria. CSF was analyzed for t-tau, p-tau, Aß42, and Aß40. Data were compared to controls (n = 14), patients with Alzheimer's disease (AD, n = 42), CAA (n = 10), and primary angiitis of the central nervous system (PACNS, n = 3). RESULTS: For the CAA-I group, statistically significant differences were: lower Aß42 (p = 0.00053) compared to the control group; lower t-tau (p = 0.018), p-tau (p <  0.001), and Aß40 (p <  0.001) compared to AD; lower Aß42 (p = 0.027) compared to CAA; lower Aß42 (p = 0.012) compared to PACNS. Nearly significantly lower Aß40 (p = 0.051) and higher t-tau (p = 0.051) were seen in CAA-I compared to controls. CONCLUSION: CSF biomarkers profile similar to that of CAA was observed in CAA-I (with even lower levels of Aß42 compared to CAA). Based on our findings, high p-tau seems more specific for AD, whereas low Aß42 differentiates CAA-I from CAA, PACNS, and controls, and low Aß40 differentiates CAA-I from AD.

Mechanical thrombectomy with the Solitaire device in acute basilar artery occlusion.

AIMS: To evaluate the efficacy and safety of mechanical thrombectomy with the Solitaire FR device in revascularization of patients with acute basilar artery occlusion (ABAO) and to identify the predictive factors for clinical outcome. METHODS: This prospective single-center study included 31 patients with acute ischemic stroke attributable to ABAO treated within the first 24 h after onset of symptoms with the Solitaire device. Nineteen patients simultaneously received intravenous thrombolysis. Recanalization rates after stent retrieval were determined and the clinical outcome and mortality rate were assessed 180 days after treatment. RESULTS: The mean ±SD age of the patients was 61±17 years, the median prethrombectomy NIH Stroke Scale score was 38 (IQR 9-38) and the median Glasgow Coma Scale (GCS) score was 7 (IQR 4-14). Successful recanalization (TICI 3 or 2b) was achieved in 23 patients (74%). Five symptomatic intracranial hemorrhages were related to the procedure. Ten symptomatic distal migrations of thrombotic material occurred. A favorable outcome, defined as a modified Rankin Score (mRS) of 0-2, was observed in 35% of patients (11/31). Overall mortality rate was 32% (10/31). In the univariate analysis, elevated baseline glucose (p=0.008) was significantly associated with a poor outcome (mRS >2), whereas a tendency towards significance was observed with age (p=0.06), GCS on admission (p=0.07) and symptom-related lesions on T2 sequences (p=0.10). Patients with successful recanalization tended to have a better outcome (p=0.20). CONCLUSION: Mechanical thrombectomy with the Solitaire FR device can rapidly and effectively contribute to a high rate of recanalization and improve functional outcome in patients with ABAO and has an acceptable complication rate.

Thalamic lesions: a radiological review.

BACKGROUND: Thalamic lesions are seen in a multitude of disorders including vascular diseases, metabolic disorders, inflammatory diseases, trauma, tumours, and infections. In some diseases, thalamic involvement is typical and sometimes isolated, while in other diseases thalamic lesions are observed only occasionally (often in the presence of other typical extrathalamic lesions). SUMMARY: In this review, we will mainly discuss the MRI characteristics of thalamic lesions. Identification of the origin of the thalamic lesion depends on the exact localisation inside the thalamus, the presence of extrathalamic lesions, the signal changes on different MRI sequences, the evolution of the radiological abnormalities over time, the history and clinical state of the patient, and other radiological and nonradiological examinations.

[Headache due to idiopathic intracranial hypotension. Three case reports]. / Céphalées par hypotension intracrânienne idiopathique. A propos de trois observations.

Headaches were classified in 1988 by the International Headache Society (IHS). Postural headache is related to intracranial hypotension, most often secondary to lumbar puncture. We report three observations where headache of unknown cause led to the diagnosis of spontaneous intracranial hypotension.