19例良性病变患者^(18)F-FDG PET显像特点分析  

Evaluation of 19 cases of benign lesions with high accumulation of tracer on ^(18)F-FDG PET imaging

作　　者：王全师[1] 吴湖炳[1] 王明芳[1] 黄祖汉[1] 

机构地区：[1]第一军医大学附属南方医院南方PET中心,广州510515

出　　处：《中华核医学杂志》2003年第4期210-211,共2页Chinese Journal of Nuclear Medicine

摘　　要：目的　探讨良性病变1 8F 脱氧葡萄糖 (FDG)PET显像特点。方法　 19例良性病变患者中活动性结核 13例 ,其他良性病变 6例 ,均经病理及细菌学检查确诊。分析良性病变1 8F FDGPET显像的病灶形态及放射性分布 ,计算标准摄取值 (SUV) ;并与CT或MRI及病理检查进行对比分析。结果　①活动性结核患者 13例 ,病灶均表现为1 8F FDG高摄取 ,SUV为 3.1± 1.8(2 .6～ 5 .7)。 7例肺结核病灶表现为 2个或多个条索状、网状、片状及不规则形 ,放射性分布不均匀 ,可见 1处或多处放射性缺损影 ,病理检查证实结核病灶内有干酪样坏死 ;淋巴结结核和脾结核各 1例 ,病灶内皆见放射性缺损影 ,手术及病理检查见病灶内有干酪样坏死 ,另 1例淋巴结结核表现为结节状 ;2例腰椎结核见相应腰椎体及椎间隙不规则的条索状浓聚影 ,其中 1例伴双侧腰大肌寒性脓肿的患者见相应部位大片状不均匀浓聚影。1例腹膜结核PET显像见腹膜及肠系膜明显增厚 ,弥漫性高代谢 ,CT也有相应表现。②余 6例良性病灶均见局限性结节状或团块状高代谢灶 ,SUV为 4 .5± 3.1(2 .5～ 11.5 ) ,影像学表现与CT或MRI相一致 ,病理检查未见病灶内坏死改变。结论　良性病变亦可出现1 8F FDG高摄取 ,仔细分析病灶形态及放射性分布有助于鉴别诊断 。Objective To review PET images of benign lesions with high accumulation of 18F-FDG and to analyse the possibility of FDG PET imaging for differentiating the benign from the malignant. Methods 18F-FDG PET imaging was performed on 19 patients with benign diseases including 13 cases of active tuberculosis and 6 cases of other benign diseases. Positive pathologic or bacteriological results were obtained for all the patients. PET images were evaluated with standardized uptake value (SUV), lesion shapes, and radioactivity distribution. CT or MRI and histopathologic findings also were reviewed. Results ①Thirteen patients with active tuberculosis showed high uptake of 18F-FDG. The SUV was 3.1±1.8. But radioactivity distribution in some lesions was not uniform and there were defect areas in the lesions. Histopathologic findings proved that the defect areas were induced by caseous necrosis. Seven cases of pulmonary tuberculosis showed two or multiple stripe and funicular high accumulation and other lesions displayed high uptake in sheet or irregular shape; 1 case of scrofula and 1 case of splenetic tuberculosis showed defect areas in the lesions; the other scrofula case showed focal intense uptake. Two of lumbar tuberculosis showed intense uptake in the lumbar vertibra, and one of the two cases complicated with the cold abscess showed bilateral high accumulation in the shape of sheet along musculus psoas major. In the peritoneal tuberculosis case, PET images showed diffuse incrassation and intense uptake in peritoneum and mesentery. CT findings revealed that the peritoneum and mesentery thickened. ②Pulmonary abscess,pulmonary cryptococcus granuloma, cerebral cryptococcus granuloma, pulmonary inflammatory pseudotumor, leiomyoma, and breast adenoma all showed high accumulation in the shapes of nodule or mass. Mean SUV was 4.5±3.1. CT or MRI findings were the same as on PET images shape. Histopathologic work-up did not find necrosis in the lesions. Conclusions Some benign lesions commonly cause an increase in

关 键 词：肿瘤 良性病变 ^18F—FDGPET 显像特点 病灶形态 放射性分布 活动性结核 放射性核显像 

分 类 号：R817.4[医药卫生—影像医学与核医学]