摘要
目的探讨腹盆部局限性巨大淋巴结增生的CT及MRI表现特征。方法回顾性分析5例经病理证实的腹(n=4)、盆部(n=1)局限性巨大淋巴结增生的CT、MRI表现。结果5例病理诊断均为透明血管型;单发肿块3例,单个较大肿块周围伴小子灶2例。CT平扫与肌肉相比呈等密度;MR平扫与肌肉相比T1WI表现为低或等信号,T2WI呈高信号。动态增强病变在动脉期和延迟扫描均持续高度强化,强化程度接近大动脉。3例肿块(直径≥4cm)增强扫描内部见结节状或裂隙状CT低密度区和MR低信号区。结论CT及MR能清晰显示腹盆部局限性巨大淋巴结增生的特征,熟悉这些特征对于提高诊断正确率、避免误诊具有重要意义。
Objective To observe CT and MRI characteristics of local Castleman disease in the abdomen and pelvis.Methods CT and MRI findings of 5 patients with local Castleman disease in the abdomen（n=4） and pelvis（n=1） pathologically proved were analyzed retrospectively.Results The pathologic subtype of 5 cases of local Castleman disease was all hyaline vascular type.Imaging findings showed a single mass in 3 and a single larger mass with small satellite nodules in 2 patients.On plain CT images,the lesions manifested as homogeneous soft masses with density equal to muscle.On MRI,the lesions also were homogenous and had isointense or slightly low signal intensity compared with that of muscle on T1WI and high signal intensity on T2WI.After intravenous injection of contrast media,the masses enhanced sharply with the attenuation similar to large arteries at arterial phase and delay scans.Areas of central lower nodulous or radial attenuation within the mass were noted in 3 patients with large masses（≥4 cm）.Conclusion The characteristics of local Castleman disease in the abdomen and pelvis can be showed clearly with CT and MR.It is important to be familiar with these characteristics to improve the diagnostic accuracy and to avoid misdiagnosis.
出处
《中国医学影像技术》
CSCD
北大核心
2009年第9期1631-1634,共4页
Chinese Journal of Medical Imaging Technology
