Kuo Sheng-Han, El-Hakam Lisa M
Department of Neurology, Baylor College of Medicine, Houston, Texas, USA.
Pediatr Neurol. 2008 Nov;39(5):361-2. doi: 10.1016/j.pediatrneurol.2008.07.014.
The hyperdense vessel sign is a debated topic in terms of its sensitivity and specificity for acute cerebral ischemia. Bilateral, hyperdense middle cerebral artery signs are rare presentations of bilateral cerebral infarction. We describe a 17-year-old boy with a history of cerebral palsy and a repaired atrial septal defect, presenting with lethargy and respiratory failure. Noncontrast computed tomography of the brain revealed bilateral, hyperdense middle cerebral artery signs, and he subsequently demonstrated bilateral cerebral infarctions in the distributions of the middle cerebral arteries. Hyperdense artery signs must alert physicians to evaluate patients for stroke, with an especially high index of suspicion for pediatric patients with hyperdense vessels, who are less likely to present with atherosclerotic disease causing vascular calcifications; rather, hyperdense artery signs could be an early sign of large-vessel thrombosis and cerebral infarction.
就急性脑缺血而言，高密度血管征在其敏感性和特异性方面是一个存在争议的话题。双侧大脑中动脉高密度征是双侧脑梗死的罕见表现。我们描述了一名17岁男孩，有脑瘫病史且房间隔缺损已修复，表现为嗜睡和呼吸衰竭。脑部非增强计算机断层扫描显示双侧大脑中动脉高密度征，随后他在大脑中动脉分布区域出现双侧脑梗死。高密度动脉征必须提醒医生对患者进行卒中评估，对于血管高密度的儿科患者尤其要高度怀疑，因为他们出现导致血管钙化的动脉粥样硬化疾病的可能性较小；相反，高密度动脉征可能是大血管血栓形成和脑梗死的早期迹象。
