Borecky N, Gudinchet F, Laurini R, Duvoisin B, Hohlfeld J, Schnyder P
Department of Radiology, University Hospital, CHUV, Lausanne, Switzerland.
Pediatr Radiol. 1995;25(2):127-30. doi: 10.1007/BF02010326.
This study was undertaken to define the role of ultrasound (US) and magnetic resonance (MR) imaging in the diagnosis and preoperative staging of cervico-thoracic lymphangiomas in children. In a retrospective study, 11 patients with surgically and pathologically proved lymphangiomas had MR imaging and 6 of them underwent simultaneous US. US showed superficial hypoechogenic multioccular cystic masses with septa of variable thickness, but failed to demonstrate retropharyngeal, axillary or mediastinal extensions in all patients. All lesions were identified on both MR T1-weighted images (T1WI) and T2-weighted images (T2WI). T2WI provided the best tissue contrast between the lymphangiomas and surrounding tissues. T1WI after i.v. injection of gadolinium DOTA (Gd DOTA) in two patients provided additional information regarding the extent of the lesion. The authors concluded that although lymphangiomas have a distinctive sonographic appearance, MR imaging allowed a better tissue characterisation and tumour extent. T2WI and T1WI after i.v. injection of Gd DOTA are especially helpful for the diagnosis and preoperative staging of cervico-thoracic lymphangiomas in children.
本研究旨在明确超声（US）和磁共振（MR）成像在儿童颈胸段淋巴管瘤诊断及术前分期中的作用。在一项回顾性研究中，11例经手术及病理证实为淋巴管瘤的患者接受了MR成像检查，其中6例同时接受了超声检查。超声显示为浅表低回声多房性囊性肿块，伴有厚度不一的分隔，但在所有患者中均未能显示咽后、腋窝或纵隔延伸情况。所有病变在MR T1加权像（T1WI）和T2加权像（T2WI）上均能被识别。T2WI在淋巴管瘤与周围组织之间提供了最佳的组织对比度。2例患者静脉注射钆喷酸葡胺（Gd DOTA）后的T1WI提供了有关病变范围的更多信息。作者得出结论，尽管淋巴管瘤具有独特的超声表现，但MR成像能更好地进行组织特征描述及确定肿瘤范围。静脉注射Gd DOTA后的T2WI和T1WI对儿童颈胸段淋巴管瘤的诊断及术前分期尤其有帮助。
