摘要
目的探讨儿童韧带样纤维瘤(DT)的影像诊断价值。方法回顾性分析14例经病理证实的儿童DT的临床及影像特点。9例行CT平扫及增强扫描,2例行MRI平扫及增强扫描,3例同时行CT及MR检查。结果儿童DT主要为腹壁外型,病灶呈梭形、卵圆形,沿肌纤维间隙浸润性生长。CT平扫表现为等、稍低密度肿物,动脉期呈轻度不均匀强化,延迟扫描强化程度显著增高。MRI表现为软组织肿物,T1WI等/稍低信号,T2WI多为不均匀稍高信号,T1WI及T2WI均见索条状稍低信号,增强后不均匀强化。结论儿童DT CT/MRI表现为梭形、卵圆形沿肌肉间隙生长的软组织肿物,延迟强化明显增高;MRI能显示其中的纤维成分,其影像特征为正确诊断提供重要依据。
Objective To investigate the imaging manifestations of desmoid tumor in children. Methods The imaging findings and clinical data of 14 cases with pathologically-proved desmoid tumor were retrospectively analyzed. Both plain and contrast-enhanced CT scans were performed in 12 cases, and MR scan was employed in 5 cases. Results In children the desmoid tumor mainly was external type of abdominal wall, presenting as fusiform or oval mass, growing along the mus- cle fiber gap. On plain CT scan, the lesion was characterized by an iso-density or slightly low-density mass, which showed mild inhomogeneous enhancement on contrast-enhanced CT scan in arterial phase; and the lesion was significantly enhanced on delayed scan. On MRI, the lesion was manifested as a soft-tissue mass, showing inhomogeneous slightly high-intensity signal on T2 WI and cord-like slightly low-intensity signal on T1 WI and T2WI with inhomogeneous enhancement on contrast- enhanced scan. Conclusion On CT and MRI, desmoid tumor in children is marked by a fusiform or oval soft-tissue mass which grows along the muscle fiber gap, the lesion shows obvious enhancement on delayed enhanced scan. MRI can display the fiber components within the tumor. The imaging characteristics provide important basis for a correct diagnosis.
出处
《临床放射学杂志》
CSCD
北大核心
2015年第1期101-105,共5页
Journal of Clinical Radiology
