Pui M H, Li Z P, Chen W, Chen J H
Department of Radiology, First Affiliated Hospital of Sun Yat-Sen University of Medical Sciences, Guangzhou, Peoples' Republic of China.
Australas Radiol. 1997 Nov;41(4):324-8.
Lymphangiomas are congenital malformations of the lymphatics that are curable by extirpation. Accurate delineation of lesion extension is important for pre-operative diagnosis, surgical planning, and assessing recurrence. The radiologic findings were retrospectively evaluated to determine the imaging appearance of these benign tumours. The plain radiographs, barium meal, ultrasound, CT, and MR images of 18 patients with one or more pathologically proved lymphangiomas were reviewed. Plain radiography and barium study showed masses displacing adjacent organs. Ultrasound examination showed uni- or multilocular cystic masses with smooth, thin or irregular, thick walls. Enhancement of the cyst wall was variable on CT and MR studies. The CT density of the fluid ranged from -4 to 34 HU depending on the lipid content and the presence of haemorrhage. The cysts were isointense to muscle on T1-weighted and hyperintense to fat on T2-weighted MR images. The MR imaging delineated the tumour lesion extension more clearly than ultrasound and CT scans. Ultrasound, CT, and MR imaging are valuable for evaluating lymphangiomas. Magnetic resonance imaging allows accurate determination of lesion extension.
淋巴管瘤是淋巴管的先天性畸形，可通过切除治愈。准确描绘病变范围对于术前诊断、手术规划和评估复发情况很重要。回顾性评估影像学表现以确定这些良性肿瘤的影像特征。对18例经病理证实患有一种或多种淋巴管瘤患者的平片、钡餐、超声、CT和MR图像进行了回顾。平片和钡餐检查显示肿块推移相邻器官。超声检查显示单房或多房囊性肿块，壁光滑、薄或不规则、厚。CT和MR研究中囊肿壁的强化情况各不相同。根据脂质含量和出血情况，囊肿内液体的CT密度范围为-4至34HU。在T1加权MR图像上，囊肿与肌肉等信号，在T2加权MR图像上，囊肿信号高于脂肪。MR成像比超声和CT扫描更清楚地描绘肿瘤病变范围。超声、CT和MR成像对评估淋巴管瘤很有价值。磁共振成像能够准确确定病变范围。
