Imaging of bridging vein thrombosis in infants with abusive head trauma: the -em class="a-plus-plus">Tadpole Sign-

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• 作者：Maria L. Hahnemann ; Sonja Kinner ; Bernd Schweiger ; Thomas Bajanowski…
• 关键词：Bridging vein thrombosis ; Abusive head trauma ; Subdural hematoma ; Subdural hygroma ; Paediatric neuroradiology
• 刊名：European Radiology
• 出版年：2015
• 出版时间：February 2015
• 年：2015
• 卷：25
• 期：2
• 页码：299-305
• 全文大小：488 KB
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• 刊物类别：Medicine
• 刊物主题：Medicine & Public Health
  Imaging and Radiology
  Diagnostic Radiology
  Interventional Radiology
  Neuroradiology
  Ultrasound
  Internal Medicine
  
• 出版者：Springer Berlin / Heidelberg
• ISSN：1432-1084

文摘

Objectives Abusive head trauma (AHT) in infants is usually diagnosed using a multi-disciplinary approach by investigating the circumstances and identifying morphological indicators, for example, subdural hematomas (SDHs), subdural hygromas (SDHys), retinal haemorrhages and encephalopathy. The present morphological study investigates the incidence, radiological characteristics and non-radiological co-factors of bridging vein thrombosis (BVT) in infants with AHT. Methods From 2002 to 2013, computed tomography (CT) and magnetic resonance imaging (MRI) material of 628 infants aged 0-2?years were analysed retrospectively. If available, medicolegal expert opinions were additionally considered. Cases with SDHs and/or SDHys were identified and systematically evaluated as to the presence and characteristics of BVT. Results SDHs and/or SDHys were present in 29 of the 81 cases exhibiting morphological abnormalities in the initial CT. Among these, 11 cases (40?%) had BVT (mean age--.0?months). BVT could be best depicted in the T1-weighted spin echo and T2*/susceptibility-weighted MRI. In one case, BVT could be depicted indirectly using time-of-flight MR venography. The predominant (73?%) BVT shape was found to be tadpole-like (-em class="a-plus-plus">Tadpole Sign-/em>). Conclusions In the absence of appropriate accidental trauma, BVT appears to be a strong indicator of AHT. Therefore, the BVT/Tadpole Sign represents compelling cause to search for other signs of AHT. Key points -BVT is an excellent indicator of AHT in SDH/SDHy cases. -Accidental trauma must be ruled out before diagnosing AHT. -The Tadpole Sign appears to be the most characteristic shape of BVT. -BVT can be depicted using CT, MRI and MR venography. -The Tadpole Sign suggests searching for other signs of AHT.