腹膜后炎性肌纤维母细胞瘤的CT表现

目的：分析腹膜后炎性肌纤维母细胞瘤（IMT）的CT表现，旨在提高对该病的认识及诊断水平。方法：回顾性分析经手术病理证实的6例腹膜后IMT患者，均行CT平扫及增强扫描。结果：6例病变最大径3.4~22.0 cm，5例囊实性，CT平扫呈等低密度，增强扫描动脉期实性成分呈轻中度强化，静脉期及延迟期呈持续强化，囊性成分未见明显强化，2例内见分隔强化。1例囊性，增强扫描囊性成分无强化，周围包膜轻度强化。结论：腹膜后IMT具有一定特征，瘤体较大，形态多不规则，囊实性较多见，增强扫描实性成分呈持续强化。     

炎性肌纤维母细胞瘤的CT表现

目的:探讨炎性肌纤维母细胞瘤的CT表现.方法:搜集经手术病理证实的10例炎性肌纤维母细胞瘤患者,所有病例均行CT平扫及增强扫描.结果:发生于腹腔2例,盆腔2例,食管下段1例,蝶窦1例,左肺1例,左侧锁骨上窝1例,左前臂1例,右前腹壁1例.CT表现为实性肿块8例,囊实性肿块2例,增强扫描实性部分呈均质或不均质中度或明显强化.病理示瘤组织由梭形纤维细胞组成,免疫组化染色SMA阳性表达.结论:CT检查能为临床资料炎性肌纤维母细胞瘤提供有价值的信息.     

腹部炎性肌纤维母细胞瘤的CT表现与病理对照分析

目的 对照分析腹部炎性肌纤维母细胞瘤(IMT)的CT表现与病理结果,旨在提高其影像诊断水平.方法 经手术病理证实的10例腹部IMT,术前均经CT检查,对照术后病理结果总结分析肿瘤的生长方式、形态、密度以及CT增强表现.结果 发生于肝脏2例,腹腔3例,脾脏、十二指肠降部上段、胃窦部、胆囊、膀胱各1例.CT表现为囊性肿块2例,囊实混合型3例,实性肿块5例.增强扫描实性部分呈均匀或不均匀轻中度或明显强化,囊性部分不强化,囊实混合型其内见不规则样、片状、花环状、分隔样强化,病灶与周围组织分界清晰.结论 腹部IMT的CT表现特点对诊断及鉴别诊断可提供有价值的信息,但确诊需依赖病理组织学和免疫组织化学检查.     

儿童炎性肌纤维母细胞瘤CT表现与病理对照

目的探讨儿童炎性肌纤维母细胞瘤的CT表现。资料与方法回顾性分析6例经手术证实的炎性肌纤维母细胞瘤,将CT表现与手术病理结果相对照,所有病例均行CT平扫和增强。结果发生于大网膜和小肠系膜各1例,右侧卵巢系膜1例,乙状结肠系膜2例,右上肺1例合并支气管囊肿。CT表现实性肿块2例,3例表现为囊实性肿块,1例完全囊性。钙化4例,3例呈大片状,1例呈条状钙化。增强扫描肿瘤实性部分呈明显强化2例,病理上肿瘤血管异常丰富,1例后方见增粗的血管,3例分房状肿瘤间隔有强化,而中心成分无强化区病理上往往是黏液变性,未见肿瘤包埋血管。病理上瘤组织大部分由梭形纤维细胞构成,可有黏液变性和坏死、钙化。黏液/血管型3例,梭形细胞型1例,纤维型2例。5例免疫组织化学检查,4例波形蛋白(Vimentin)染色和平滑肌肌动蛋白(SMA)染色均呈阳性。结论 CT检查对炎性肌纤维母细胞瘤诊断能提供有价值信息。     

肺部炎性肌纤维母细胞瘤的CT诊断

目的探讨肺部炎性肌纤维母细胞瘤(IMT)的CT表现及其临床诊断价值。方法回顾性分析经手术病理证实的8例肺部IMT患者的CT表现,其中5例行CT平扫检查,3例行平扫+增强扫描检查。结果 8例患者3例为中央型,CT表现为边界不清的实变灶;5例为周围型,表现为边界清楚的软组织密度肿块或结节;增强后肿块实性部分呈均匀或不均匀中度或明显强化,坏死、囊变区无明显强化。病理示肿瘤由梭形细胞及炎症细胞组成,免疫组织化学染色肌源性蛋白阳性表达。结论 IMT是一种少见的肿瘤,CT检查能为其提供准确的解剖部位等信息,在定性诊断方面有一定价值,但最后确诊还有赖于组织病理学及免疫组织化学检查。     

18F-FDG PET/CT显像对小肠腺癌的诊断价值

目的 探讨18F-FDG PET/CT全身显像对小肠腺癌(SIA)的诊断价值.方法 回顾29例SIA(男17例,女12例)、21例小肠淋巴瘤(SIL;男15例,女6例)及10例小肠结核(SIT;男4例,女6例)的18F-FDG PET/CT显像资料,采用目测法和半定量方法(SUVmax)分析3种疾病PET/CT显像特点.计量资料差异比较用单因素方差分析,率的比较行x2检验.结果 (1) PET/CT图像上SIA多表现为小肠局部团块状、结节状高代谢灶,典型的SIL为小肠局部环形异常放射性浓聚灶,SIT多呈结节状、条状高代谢灶、病灶呈“跳跃性”分布;SIA的SUVmax为8.44±3.82,低于SIL(11.54±4.02; F=86.96,t=2.77,均P＜0.01),与SIT的8.61±2.99差异无统计学意义(t=0.11,P＞0.05).(2)SIA、SIL和SIT的灶周淋巴结肿大检出率分别为72.41％ (21/29)、85.71％(18/21)和70.00％ (7/10) (x2=1.50,P＞0.05);SIA的灶周肿大淋巴结SUVmax为5.59±2.86,明显低于SIL的11.10±5.72(F=56.56,t=3.85,均P＜0.01),与SIT的5.63±3.36差异无统计学意义(t=0.30,P＞0.05).PET/CT显像对SIA的灶周淋巴结肿大检出率明显高于CT(41.38％,12/29;x2=5.69,P＜0.05).(3)55.17％(16/29)的SIA有小肠外转移灶;66.67％(14/21)的SIL有小肠外病灶,以全身多发淋巴结浸润多见;80.00％(8/10)的SIT有腹腔外结核灶;三者小肠外病灶检出率差异无统计学意义(x2=2.13,P＞0.05).(4)29例SIA中15例(51.72％)累及回肠,8例(27.59％)累及空肠,4例(13.79％)空肠回肠同时受累,2例(6.90％)空肠十二指肠同时受累,病灶分布差异有统计学意义(x2=18.16,P＜0.01).(5)29例SIA中单原发癌8例(27.59％),转移性癌14例(48.28％),7例(24.14％)考虑为双原发癌.(6)以病理、诊断性治疗和临床随访结果为标准,18F-FDG PET/CT显像诊断SIA的灵敏度为93.10％(27/29),特异性为80.00％(8/10).结论 18F-FDG PET/CT全身显像可用于SIA的鉴别诊断,可为单原发、多原发及转移性SIA诊断提供依据.     

18F-FDG PET/CT显像鉴别腹腔积液性质的价值

目的 探讨18F-FDG PET/CT显像在不明原因腹腔积液患者积液性质鉴别诊断中的作用.方法 回顾性分析因不明原因腹腔积液入院的初诊患者70例,所有患者均行18F-FDG PET/CT 显像、同机CT平扫和腹腔积液细胞学检查,PET/CT显像计算病灶SUV.结果经组织病理学、腹腔镜、胃镜、肠镜等检查及临床随访确定,随访时间均大于6个月.对疑有胃肠道病变患者行PET/CT 延迟显像以明确诊断.有无腹膜转移组间SUVmax差异行两样本t检验;PET/CT、同机CT平扫及腹腔积液细胞学检查对腹膜转移诊断效能比较用McNemar检验;三者与最终结果吻合度检验用Kappa检验.结果 腹腔积液患者70例,经手术、腹膜活组织检查或腹腔积液细胞学检查证实48例为腹膜转移癌引起的恶性积液,22例为良性积液.2组腹膜的SUVmax分别为6.08±3.92和2.66±1.74,差异有统计学意义(t=-5.063,P＜0.001).PET/CT诊断45例为恶性积液,其中2例为假阳性,另有5例恶性积液被误诊为良性积液,PET/CT诊断腹膜转移的灵敏度、特异性和准确性分别为89.6％ (43/48)、90.9％ (20/22)和90.0％ (63/70).定位CT诊断27例为腹膜转移,其中4例为假阳性,CT 准确诊断良性腹腔积液18例,另有25例假阴性;定位CT诊断腹膜转移的灵敏度、特异性和准确性分别为47.9％ (23/48)、81.8％ (18/22)和58.6％ (41/70).PET/CT与定位CT诊断腹膜转移的灵敏度差异有统计学意义(x2=14.286,P＜0.001).70例腹腔积液患者中仅21例腹腔积液中见癌细胞,其余患者细胞学检查均为阴性,腹腔积液细胞学对腹膜转移诊断的灵敏度、特异性和准确性分别为43.8％ (21/48)、100％ (22/22)和61.4％ (43/70);PET/CT与细胞学检查对腹膜转移诊断的灵敏度差异有统计学意义(x2=13.885,P＜0.001).PET/CT检查结果与最后诊断结果吻合度较强(Kappa=0.776,P＜0.001),定位CT、腹腔积液细胞学检查结果与最后诊断结果吻合度均较弱(Kappa值分别为0.236和0.328,P均＜0.05).结论 18F-FDG PET/CT显像对不明原因腹腔积液患者腹膜转移诊断有重要临床价值,可用于不明原因腹腔积液的良恶性鉴别诊断.     

小儿炎性肌纤维母细胞瘤CT/MRI表现分析

【摘要】目的：回顾分析17例儿童炎性肌纤维母细胞瘤的CT/MRI影像学表现,以提高对本病的特异影像表现认识。方法：搜集复旦大学附属儿科医院及浙江大学附属儿童医院2010年2月－2014年5月由病理确诊的炎性肌纤维母细胞瘤17例。17例中术前行多排螺旋CT平扫及增强检查15例,行B超检查5例,行MRI平扫及增强检查5例,仅行MRI平扫检查3例。不能配合的患儿检查前采用10%水合氯醛0.5mL/kg口服镇静。结果：本组17例炎性肌纤维母细胞瘤的发生部位包括头顶部1例,颈部2例,肺部2例,肝脏2例,胃壁2例,胰腺2例,后腹膜1例,结肠1例,膀胱3例,直肠1例。 17例病例影像学均表现为占位性病变,边缘不清,密度/信号不均匀,部分病灶内有钙化,位于肿块中央较多;增强后病灶均可见显著不均匀强化,边缘强化为主。17例病例中13例完整切除肿瘤,3例行肿瘤活检术,1例行肿块部分切除术,1例活检病例在术后6个月随访CT检查发现腹腔多发软组织肿块。病理均明确诊断。结论：儿童炎性肌纤维母细胞瘤CT/MRI表现特征包括钙化、增强显著和边界不清楚等特点,尤其是边缘强化较显著的特征,与其他儿童常见实体瘤有所不同。     

炎性肌纤维母细胞瘤的影像学诊断

目的:探讨炎性肌纤维母细胞瘤(IMT)的CT和MRI表现及其临床诊断价值。方法:回顾性分析经手术病理证实的20例IMT患者的CT和MRI表现,其中14例行CT检查,6例行MRI检查。结果:20例中病变发生于肺部8例、会厌部1例、鼻腔1例、腘窝1例、胸壁2例、臀部2例、下颌磨牙区1例、膀胱1例、浅表软组织3例。肺内病变3例为中央型,CT表现为边界不清的实变灶;5例为周围型,表现为边界清楚的软组织密度肿块或结节。肺外病变表现为不同部位实性肿物或结节。MRI表现为稍长T_1稍长T_2信号的软组织肿块;增强扫描后肿块实性部分呈均匀或不均匀中度或明显强化,坏死、囊变区无明显强化。病理示肿瘤由梭形细胞及炎细胞组成,免疫组织化学染色肌源性蛋白阳性表达。结论:IMT是一种少见的肿瘤,CT和MRI检查能为其提供准确的解剖部位等信息,在定性诊断方面有一定价值,但最后确诊还有赖于组织病理学及免疫组织化学检查。     

18F-FDG PET/CT显像在恶性胸膜间皮瘤诊断中的价值

目的 探讨18F-脱氧葡萄糖(FDG)PET/CT显像在恶性胸膜间皮瘤(MPM)诊断中的临床价值及原发肿瘤病灶平均标准摄取值(SUVmax)对患者预后的判断价值.方法 回顾性总结17例2002-2008年临床疑诊MPM患者18F-FDG PET/CT显像资料,测量病灶的SUVmax.将病理检查及临床随访证实的MPM患者按照有无转移分为2组,测定每例患者原发肿瘤病灶的SUVmax,用受试者工作特征(ROC)曲线评价SUVmax对患者转移与否的诊断价值,判断预后.采用SPSS 11.0软件进行t检验.结果 经病理及随访结果证实MPM 12例,良性胸膜病变5例,二者的SUVmax分别为5.78±1.81和2.72±2.51,差异有统计学意义(t=2.8,P<0.05).全身18F-FDG PET/CT显像诊断MPM的灵敏度为100%(12/12),特异性为4/5,准确性为94%(16/17),18F-FDG PET/CT显像有7例MPM伴有骨和(或)淋巴结转移.SUVmaxROC曲线分析表明曲线下面积(AUC)为0.80.结论 全身18F-FDG PET/CT显像对于MPM的诊断有重要价值.原发肿瘤病灶SUVmax越高越易发生转移,预后越差.     

肝脏炎性肌纤维母细胞瘤的影像表现

目的 探讨肝脏炎性肌纤维母细胞瘤(IMT)的影像表现特征,以提高影像诊断水平.方法 回顾性分析经手术病理证实的12例肝脏IMT的影像表现,其中12例均行CT扫描,2例行MR检查.结果12例单发病灶均位于肝右叶.6例肿块为实性,4例肿块为囊实混合性,2例表现为门静脉周围浸润性病灶.CT图像上呈实性或囊实性低密度影,MR T1WI为低信号,T2WI为略高信号;增强扫描肿块实性部分呈均匀或不均匀中重度强化,囊实混合性病灶周边及灶内实性间隔呈蜂窝样强化.结论CT及MR检查能为临床诊断及鉴别诊断肝脏IMT提供有价值的信息.     

18F-FDG PET/CT显像在恶性胸膜间皮瘤诊断中的价值

Objective Malignant pleural mesothelioma (MPM) is an uncommon neoplasm arising from mesothelial cells of the pleura. The prognosis is poor with median survival of 4- 12 months. The aim of this study was to evaluate the clinic value of 18F-fluorodeoxyglucose (FDG) PET/CT imaging in the diagno-sis and to staging of MPM and to determine if the mean standardized uptake value (SUVmax) of primary tumor correlates with staging and prognosis. Methods Study was conducted retrospectively including 17 pa-tients with clinical suspicion of MPM from 2002 to 2008. Twelve cases of MPM and 5 cases benign pleural pa-thology were proven by histopathology and clinical follow-up. 18F-FDG PET/CT imaging was performed 1 h af-ter injection of 7.4 MBq/kg 18F-FDG. Patients with MPM confirmed by histopatholagy were divided into two groups: with and without metastasis. PET/CT findings were analyzed to determine if SUVmax of primary tumor correlates with staging and prognosis. Receiver operating characteristic (ROC) curve of SUVmax of primary tumor was evaluated to determine if it was a predictor of metastasis and survival time. Results The difference in SUVmax between MPM and benign pleural were statistical significant (5.78±1.81 vs 2.72± 2.51, t = 2. 8, P < 0.05). The diagnostic sensitivity, specificity and accuracy of 18F-FDG PET/CT imaging for MPM were 100% (12/12) , 4/5 and 94% (16/17). All 7 cases of bone and lymph node metastases were detected by 18F-FDG PET/CT imaging. Area under the curve (AUC) was 0.80. Conclusions 18F-FDG PET/CT imaging is useful in the diagnosis and staging of MPM. High SUVmax in the primary tumor correlates well with prognosis and predication of a greater propensity to have nodal and distant metastasis.     

18F-FDG PET/CT显像诊断心包恶性病变的价值

Objective To assess the value of integrated 18 F-fluorodeoxyglucose (FDG) PET/CT in differentiation of malignant and benign pericardial effusion. Methods 18F-FDG PET/CT were performed in 23 patients with pericardial effusion. The detected soft tissue tumor or nodulous lession in pericardium or the thickened pericardium, with the maximum standardized uptake value( SUVmax ) ≥2.5, was defined as PET/CT-positive. The invaded lession in pericardium with SUVmax ≥2.5 was also as the positive. The difference of SUVmax of benign and malignant lesions was analyzed with two-independent-sample test of nonparametric tests. The final diagnosis was confirmed by biopsy or post-operative pathology. Results The diagnosis were confirmed with 14 malignant and 9 benign lesions. The median of SUVmax was 6.0 in malignancy group and 2.2 in benign group (z= -3. 279, P =0.001 ). According to the pathology results, there were one false negative case and two false positive cases with PET/CT imaging interpretation. The sensitivity, specificity,accuracy, positive predictive value ( PPV ) and negative predictive value ( NPV ) of 18 F-FDG PET/CT in diagnosis of benignity or malignance of pericardium effusion were 92.9% ( 13/14), 7/9, 87.0% (20/23),86.7% (13/15) and 7/8, respectively. Conclusion For the patients with pericardium effusion 18F-FDG PET/CT may be a helpful modality for malignancy differentiation     

18F-FDG PET/CT显像在恶性胸膜间皮瘤诊断中的价值

Objective Malignant pleural mesothelioma (MPM) is an uncommon neoplasm arising from mesothelial cells of the pleura. The prognosis is poor with median survival of 4- 12 months. The aim of this study was to evaluate the clinic value of 18F-fluorodeoxyglucose (FDG) PET/CT imaging in the diagno-sis and to staging of MPM and to determine if the mean standardized uptake value (SUVmax) of primary tumor correlates with staging and prognosis. Methods Study was conducted retrospectively including 17 pa-tients with clinical suspicion of MPM from 2002 to 2008. Twelve cases of MPM and 5 cases benign pleural pa-thology were proven by histopathology and clinical follow-up. 18F-FDG PET/CT imaging was performed 1 h af-ter injection of 7.4 MBq/kg 18F-FDG. Patients with MPM confirmed by histopatholagy were divided into two groups: with and without metastasis. PET/CT findings were analyzed to determine if SUVmax of primary tumor correlates with staging and prognosis. Receiver operating characteristic (ROC) curve of SUVmax of primary tumor was evaluated to determine if it was a predictor of metastasis and survival time. Results The difference in SUVmax between MPM and benign pleural were statistical significant (5.78±1.81 vs 2.72± 2.51, t = 2. 8, P < 0.05). The diagnostic sensitivity, specificity and accuracy of 18F-FDG PET/CT imaging for MPM were 100% (12/12) , 4/5 and 94% (16/17). All 7 cases of bone and lymph node metastases were detected by 18F-FDG PET/CT imaging. Area under the curve (AUC) was 0.80. Conclusions 18F-FDG PET/CT imaging is useful in the diagnosis and staging of MPM. High SUVmax in the primary tumor correlates well with prognosis and predication of a greater propensity to have nodal and distant metastasis.     

18F-FDG PET/CT显像在恶性胸膜间皮瘤诊断中的价值

Objective Malignant pleural mesothelioma (MPM) is an uncommon neoplasm arising from mesothelial cells of the pleura. The prognosis is poor with median survival of 4- 12 months. The aim of this study was to evaluate the clinic value of 18F-fluorodeoxyglucose (FDG) PET/CT imaging in the diagno-sis and to staging of MPM and to determine if the mean standardized uptake value (SUVmax) of primary tumor correlates with staging and prognosis. Methods Study was conducted retrospectively including 17 pa-tients with clinical suspicion of MPM from 2002 to 2008. Twelve cases of MPM and 5 cases benign pleural pa-thology were proven by histopathology and clinical follow-up. 18F-FDG PET/CT imaging was performed 1 h af-ter injection of 7.4 MBq/kg 18F-FDG. Patients with MPM confirmed by histopatholagy were divided into two groups: with and without metastasis. PET/CT findings were analyzed to determine if SUVmax of primary tumor correlates with staging and prognosis. Receiver operating characteristic (ROC) curve of SUVmax of primary tumor was evaluated to determine if it was a predictor of metastasis and survival time. Results The difference in SUVmax between MPM and benign pleural were statistical significant (5.78±1.81 vs 2.72± 2.51, t = 2. 8, P < 0.05). The diagnostic sensitivity, specificity and accuracy of 18F-FDG PET/CT imaging for MPM were 100% (12/12) , 4/5 and 94% (16/17). All 7 cases of bone and lymph node metastases were detected by 18F-FDG PET/CT imaging. Area under the curve (AUC) was 0.80. Conclusions 18F-FDG PET/CT imaging is useful in the diagnosis and staging of MPM. High SUVmax in the primary tumor correlates well with prognosis and predication of a greater propensity to have nodal and distant metastasis.     

18F-FDG PET/CT显像在恶性胸膜间皮瘤诊断中的价值

Objective Malignant pleural mesothelioma (MPM) is an uncommon neoplasm arising from mesothelial cells of the pleura. The prognosis is poor with median survival of 4- 12 months. The aim of this study was to evaluate the clinic value of 18F-fluorodeoxyglucose (FDG) PET/CT imaging in the diagno-sis and to staging of MPM and to determine if the mean standardized uptake value (SUVmax) of primary tumor correlates with staging and prognosis. Methods Study was conducted retrospectively including 17 pa-tients with clinical suspicion of MPM from 2002 to 2008. Twelve cases of MPM and 5 cases benign pleural pa-thology were proven by histopathology and clinical follow-up. 18F-FDG PET/CT imaging was performed 1 h af-ter injection of 7.4 MBq/kg 18F-FDG. Patients with MPM confirmed by histopatholagy were divided into two groups: with and without metastasis. PET/CT findings were analyzed to determine if SUVmax of primary tumor correlates with staging and prognosis. Receiver operating characteristic (ROC) curve of SUVmax of primary tumor was evaluated to determine if it was a predictor of metastasis and survival time. Results The difference in SUVmax between MPM and benign pleural were statistical significant (5.78±1.81 vs 2.72± 2.51, t = 2. 8, P < 0.05). The diagnostic sensitivity, specificity and accuracy of 18F-FDG PET/CT imaging for MPM were 100% (12/12) , 4/5 and 94% (16/17). All 7 cases of bone and lymph node metastases were detected by 18F-FDG PET/CT imaging. Area under the curve (AUC) was 0.80. Conclusions 18F-FDG PET/CT imaging is useful in the diagnosis and staging of MPM. High SUVmax in the primary tumor correlates well with prognosis and predication of a greater propensity to have nodal and distant metastasis.     

18F-FDG PET/CT显像在恶性胸膜间皮瘤诊断中的价值

Objective Malignant pleural mesothelioma (MPM) is an uncommon neoplasm arising from mesothelial cells of the pleura. The prognosis is poor with median survival of 4- 12 months. The aim of this study was to evaluate the clinic value of 18F-fluorodeoxyglucose (FDG) PET/CT imaging in the diagno-sis and to staging of MPM and to determine if the mean standardized uptake value (SUVmax) of primary tumor correlates with staging and prognosis. Methods Study was conducted retrospectively including 17 pa-tients with clinical suspicion of MPM from 2002 to 2008. Twelve cases of MPM and 5 cases benign pleural pa-thology were proven by histopathology and clinical follow-up. 18F-FDG PET/CT imaging was performed 1 h af-ter injection of 7.4 MBq/kg 18F-FDG. Patients with MPM confirmed by histopatholagy were divided into two groups: with and without metastasis. PET/CT findings were analyzed to determine if SUVmax of primary tumor correlates with staging and prognosis. Receiver operating characteristic (ROC) curve of SUVmax of primary tumor was evaluated to determine if it was a predictor of metastasis and survival time. Results The difference in SUVmax between MPM and benign pleural were statistical significant (5.78±1.81 vs 2.72± 2.51, t = 2. 8, P < 0.05). The diagnostic sensitivity, specificity and accuracy of 18F-FDG PET/CT imaging for MPM were 100% (12/12) , 4/5 and 94% (16/17). All 7 cases of bone and lymph node metastases were detected by 18F-FDG PET/CT imaging. Area under the curve (AUC) was 0.80. Conclusions 18F-FDG PET/CT imaging is useful in the diagnosis and staging of MPM. High SUVmax in the primary tumor correlates well with prognosis and predication of a greater propensity to have nodal and distant metastasis.     

18F-FDG PET/CT显像在恶性胸膜间皮瘤诊断中的价值

Objective Malignant pleural mesothelioma (MPM) is an uncommon neoplasm arising from mesothelial cells of the pleura. The prognosis is poor with median survival of 4- 12 months. The aim of this study was to evaluate the clinic value of 18F-fluorodeoxyglucose (FDG) PET/CT imaging in the diagno-sis and to staging of MPM and to determine if the mean standardized uptake value (SUVmax) of primary tumor correlates with staging and prognosis. Methods Study was conducted retrospectively including 17 pa-tients with clinical suspicion of MPM from 2002 to 2008. Twelve cases of MPM and 5 cases benign pleural pa-thology were proven by histopathology and clinical follow-up. 18F-FDG PET/CT imaging was performed 1 h af-ter injection of 7.4 MBq/kg 18F-FDG. Patients with MPM confirmed by histopatholagy were divided into two groups: with and without metastasis. PET/CT findings were analyzed to determine if SUVmax of primary tumor correlates with staging and prognosis. Receiver operating characteristic (ROC) curve of SUVmax of primary tumor was evaluated to determine if it was a predictor of metastasis and survival time. Results The difference in SUVmax between MPM and benign pleural were statistical significant (5.78±1.81 vs 2.72± 2.51, t = 2. 8, P < 0.05). The diagnostic sensitivity, specificity and accuracy of 18F-FDG PET/CT imaging for MPM were 100% (12/12) , 4/5 and 94% (16/17). All 7 cases of bone and lymph node metastases were detected by 18F-FDG PET/CT imaging. Area under the curve (AUC) was 0.80. Conclusions 18F-FDG PET/CT imaging is useful in the diagnosis and staging of MPM. High SUVmax in the primary tumor correlates well with prognosis and predication of a greater propensity to have nodal and distant metastasis.     

18F-FDG PET/CT显像在恶性胸膜间皮瘤诊断中的价值

Objective Malignant pleural mesothelioma (MPM) is an uncommon neoplasm arising from mesothelial cells of the pleura. The prognosis is poor with median survival of 4- 12 months. The aim of this study was to evaluate the clinic value of 18F-fluorodeoxyglucose (FDG) PET/CT imaging in the diagno-sis and to staging of MPM and to determine if the mean standardized uptake value (SUVmax) of primary tumor correlates with staging and prognosis. Methods Study was conducted retrospectively including 17 pa-tients with clinical suspicion of MPM from 2002 to 2008. Twelve cases of MPM and 5 cases benign pleural pa-thology were proven by histopathology and clinical follow-up. 18F-FDG PET/CT imaging was performed 1 h af-ter injection of 7.4 MBq/kg 18F-FDG. Patients with MPM confirmed by histopatholagy were divided into two groups: with and without metastasis. PET/CT findings were analyzed to determine if SUVmax of primary tumor correlates with staging and prognosis. Receiver operating characteristic (ROC) curve of SUVmax of primary tumor was evaluated to determine if it was a predictor of metastasis and survival time. Results The difference in SUVmax between MPM and benign pleural were statistical significant (5.78±1.81 vs 2.72± 2.51, t = 2. 8, P < 0.05). The diagnostic sensitivity, specificity and accuracy of 18F-FDG PET/CT imaging for MPM were 100% (12/12) , 4/5 and 94% (16/17). All 7 cases of bone and lymph node metastases were detected by 18F-FDG PET/CT imaging. Area under the curve (AUC) was 0.80. Conclusions 18F-FDG PET/CT imaging is useful in the diagnosis and staging of MPM. High SUVmax in the primary tumor correlates well with prognosis and predication of a greater propensity to have nodal and distant metastasis.     

18F-FDG PET/CT显像在恶性胸膜间皮瘤诊断中的价值

Objective Malignant pleural mesothelioma (MPM) is an uncommon neoplasm arising from mesothelial cells of the pleura. The prognosis is poor with median survival of 4- 12 months. The aim of this study was to evaluate the clinic value of 18F-fluorodeoxyglucose (FDG) PET/CT imaging in the diagno-sis and to staging of MPM and to determine if the mean standardized uptake value (SUVmax) of primary tumor correlates with staging and prognosis. Methods Study was conducted retrospectively including 17 pa-tients with clinical suspicion of MPM from 2002 to 2008. Twelve cases of MPM and 5 cases benign pleural pa-thology were proven by histopathology and clinical follow-up. 18F-FDG PET/CT imaging was performed 1 h af-ter injection of 7.4 MBq/kg 18F-FDG. Patients with MPM confirmed by histopatholagy were divided into two groups: with and without metastasis. PET/CT findings were analyzed to determine if SUVmax of primary tumor correlates with staging and prognosis. Receiver operating characteristic (ROC) curve of SUVmax of primary tumor was evaluated to determine if it was a predictor of metastasis and survival time. Results The difference in SUVmax between MPM and benign pleural were statistical significant (5.78±1.81 vs 2.72± 2.51, t = 2. 8, P < 0.05). The diagnostic sensitivity, specificity and accuracy of 18F-FDG PET/CT imaging for MPM were 100% (12/12) , 4/5 and 94% (16/17). All 7 cases of bone and lymph node metastases were detected by 18F-FDG PET/CT imaging. Area under the curve (AUC) was 0.80. Conclusions 18F-FDG PET/CT imaging is useful in the diagnosis and staging of MPM. High SUVmax in the primary tumor correlates well with prognosis and predication of a greater propensity to have nodal and distant metastasis.