肾脏淋巴瘤的影像诊断

Imaging Diagnosis of Renal Lymphoma

目的探讨肾脏淋巴瘤的CT、MRI及PET/CT特征。资料与方法回顾性分析18例经病理证实的肾脏淋巴瘤患者的临床及影像学资料。17例患者行CT检查,1例仅行平扫,其余16例行平扫及增强扫描,3例同时行PET/CT检查;1例患者行MRI平扫及增强扫描。结果 18例中表现为多发结节型6例,单发结节型3例,邻近腹膜后侵犯型5例,肾周型3例,弥漫浸润型1例。结论 CT、MRI及PET/CT均能显示肾脏淋巴瘤病变。肾脏内多发、单发肿块或腹膜后肿块直接侵犯,CT平扫表现为均匀等或稍低密度,MRI呈等T1、等T2信号,轻度强化是肾脏淋巴瘤的普遍特点,有一定的特征性。PET能更敏感地发现其他器官的隐匿性病灶。

Objective To investigate the CT,MRI and PET/CT manifestations of renal lymphoma.Materials and Methods Imaging and clinical data of 18 patients with renal lymphoma proved by pathology were analyzed retrospectively.17 cases received CT scan,1 case with plain scan only,other 16 cases received plain and enhanced scan.3 cases received PET/CT scan.1 case received MRI plain and enhanced scan.Results In all of the 18 patients,6 patients were presented as multiple masses pattern;3 patients showed solitary masses pattern;5 cases were presented as contiguous retroperitoneal masses extension pattern;3 patients demonstrated perinephric pattern and 1 patient with infiltration pattern.Conclusion CT,MRI and PET/CT can clearly demonstrate the lesion of renal lymphoma.The general features of renal lymphoma are multiple masses,solitary masses or contiguous retroperitoneal masses extension with homogeneous attenuation and mild enhancement.PET can sensitively detect occult lesions in other ogans.