摘要
目的探讨腮腺腺淋巴瘤(Warthin瘤)的CT及MRI表现,旨在提高对本病的认识。资料与方法回顾性分析经手术病理证实的14例腮腺淋巴瘤的CT和MRI表现。12例行CT平扫,其中10例行增强扫描;2例行MRI平扫,其中1例行增强扫描。结果 14例共22个病灶,单侧多发3例,单侧单发9例,双侧单发2例且其中1例为术后14年对侧再发。16个(72.7%)病灶或病灶主体位于腮腺浅叶后下极,长径0.8～5.0cm,平均长径(2.3±1.3)cm,病灶呈圆形或卵圆形;19个(86.4%)病灶边缘光整,3例单发病灶边缘模糊,手术证实合并感染。12例(共18个病灶)CT平扫14个(77.8%)病灶密度均匀,4个(22.2%)病灶密度不均匀;10例(共15个病灶)增强扫描7个(46.7%)病灶呈明显强化,5个(33.3%)病灶呈中度强化,3个(20%)病灶呈轻度强化。3个病灶可见边缘线样强化。MRI上肿瘤呈均匀或不均匀信号,T1WI呈低信号,T2WI呈中等或高信号;平扫包膜呈环状低信号,增强扫描呈轻度强化。结论中老年男性,病灶位于腮腺后下极,边缘清晰,明显强化,特别是双侧或多发病灶,并有吸烟史者,应首先考虑腮腺腺淋巴瘤的诊断。
Objective To discuss the CT and MR imaging features of parotid gland adenolymphoma（warthin tumor）in order to improve its recognition.Materials and Methods The CT and MR findings of 14 cases with parotid gland adenolymphoma proved pathologically were retrospectively analyzed,12 cases received plain CT scan and enhanced CT scan in 10 cases,2 cases received plain MR scan and enhanced MR scan in 1 case.Results 22 lesions were found in 14 cases,with unilateral multiple lesions in 3 cases,unilateral solitary in 9 cases,bilateral solitary in 2 cases and 1 case was contralateral recurrence after 14 years of surgery,16 （72.7%） lesions located in the lower superficial pole of the parotid gland.Mean long axis diameter was （2.3±1.3）cm（rang 0.8 to 5.0 cm）,lesions were round or oval;margin of 19 lesions（86.4%） were smooth,3 solitary lesions edge were blur with infection.12 cases （14 lesions） were presented as homogeneous density（n=14,77.7%） or heterogeneous（n=7）,7 lesions （46.7%） showed significantly enhanced,5 lesions （33.3%） showed moderate enhanced,3 lesions showed slightly enhanced.3 lesions showed margin line-like enhancement.The tumors were presented as homogeneous or heterogeneous intensity signal,had hypointensity signal on T1-weighted and iso-hyperintensity signal on T2-weighted.The envelope had a ring of hypointensity signal on plain MR scan,and it showed mild enhancement.Conclusion Adenolymphoma of parotid gland should be first considered when male with middle-old aged has lesions located in the posterior and inferior pole with well-defined margin,marked enhancement,smoking history,especially when the lesion is multiple or bilaterally located.
出处
《临床放射学杂志》
CSCD
北大核心
2011年第2期183-187,共5页
Journal of Clinical Radiology
关键词
腺淋巴瘤
腮腺
体层摄影术
X线计算机
磁共振成像
Adenolymphoma Parotid gland Tomography
X-ray computed Magnetic resonance imaging
