原发性腹膜后肿瘤的^(18)F-FDG PET/CT显像特征  

^(18)F-FDG PET/CT manifestations of primary retroperitoneal tumors

作　　者：丁重阳[1] 李天女[1] 

机构地区：[1]南京医科大学第一附属医院核医学科,江苏南京210029

出　　处：《中国医学影像技术》2014年第7期1045-1049,共5页Chinese Journal of Medical Imaging Technology

基　　金：南京市科技计划项目(201303038)

摘　　要：目的观察原发性腹膜后肿瘤的18F-FDG PET/CT显像特征。方法回顾性分析32例经病理证实的原发性腹膜后肿瘤18F-FDG PET/CT显像资料。观察不同病理类型肿瘤的18F-FDG PET/CT显像特征,测量肿瘤最大径及最大标准摄取值(SUVmax),比较良、恶性肿瘤最大径及SUVmax差异。结果恶性肿瘤18例,17例形态不规则,14例边界不清,11例18F-FDG摄取不均匀,2例可见远处转移;良性肿瘤14例,13例呈圆形或椭圆形,边界均清晰,11例18F-FDG摄取均匀,1例神经鞘瘤及1例畸胎瘤18F-FDG无摄取。恶性肿瘤SUVmax(11.93±7.01)明显高于良性肿瘤(3.66±2.20),差异有统计学意义(Z=-4.103,P<0.001);恶性肿瘤与良性肿瘤最大径的差异亦有统计学意义(Z=-3.287,P=0.001)。结论原发性腹膜后肿瘤的18F-FDG PET/CT表现具有一定特征,有助于临床诊断。Objective To observe the manifestations of primary retroperitoneal tumors on ^18F-FDG PET/CT. Methods The data of ^18F-FDG PET/CT scanning of 32 patients with primary retroperitoneal tumors confirmed by pathology were retrospectively analyzed. The manifestations on ^18F-FDG PET/CT were observed, and the maximum diameter and SUVmax of tumors were measured. The maximum diameter and SUVmax of tumors between benign and malignant tumors were compared. Results Among 18 cases of malignant primary retroperitoneal tumors, appeared as irregular sharp in 17 cases, obscure boundary in 14 cases, and heterogeneous uptake of ^18F-FDG in 11 cases, and 2 cases with distant metastasis. Among 14 cases of benign primary retroperitoneal tumors, appeared as round or ellipse in 13 cases,clear boundary in all cases, and homogeneity uptake of ^18F-FDG in 11 cases. 1 case of schwannoma and 1 case of teratoma had no uptake of ^18F-FDG. The SUVmax of malignant tumors （11.93±7.01） were higher than that of benign tumors （3.66±2.20） with statistical significance （Z=-4.103, P〈0.001）. And the difference of tumor maximum diameter between benign and malignant tumors was also statistically significative （Z=-3.287, P=0.001）. Conclusion The ^18F-FDG PET/CT manifestation of primary retroperitoneal tumors has certain characteristics which is helpful for clinical diagnosis.

关 键 词：腹膜后肿瘤 正电子发射型体层摄影术 18F氟脱氧葡萄糖 

分 类 号：R817.4[医药卫生—影像医学与核医学] R734.3[医药卫生—放射医学]