99Tcm-MDP骨显像SUV值在鼻咽癌颅底侵犯诊断价值初步研究

目的通过传统99Tc^m-MDP(锝-99亚甲基二膦酸盐)全身骨单光子发射计算机断层成像术/电子计算机断层扫描(single-photon emission computed tomography/computed tomography,SPECT/CT)显像,计算鼻咽癌患者颅底骨质基于放射活度的标准摄取值(standardized uptake value,SUV),观察99Tc^m-MDP全身骨SPECT/CT显像中的颅底区域SUV对鼻咽癌颅底骨质侵犯的增益价值及阳性诊断的最佳SUV界值范围。方法选取2016年6月至2017月1月本院确诊鼻咽癌并行全身骨显像患者51例,男40例,女11例,年龄27~77岁,平均年龄50.4±10.7岁,其中28例鼻咽部磁共振成像(magnetic resonance imaging,MRI)证实伴颅底骨质侵犯,23例鼻咽部MRI证实未见颅底骨质侵犯。通过定量分析软件分析融合图像,勾勒感兴趣区(region of interest,ROI),测得颅底骨质侵犯组及颅底骨质非侵犯组的最大标准化摄取值(SUVmax)及平均标准化摄取值(SUVmean),并采用t检验和受试者工作特征曲线(receiver operating characteristic curve,ROC)计算两组的界值。结果颅底骨质侵犯组28例SUVmax平均值为3.17(标准差为1.38);颅底骨质非侵犯组23例SUVmax平均值为1.34(标准差为0.39)。两组比较,t=6.129,P<0.001,差异有统计学意义。颅底骨质侵犯组28例SUVmean平均值为0.45(标准差为0.16);颅底骨质非侵犯组23例SUVmean平均值为0.9(标准差为0.37)。两组比较,t=5.80,P<0.001,差异有统计学意义。51例鼻咽癌患者的SUVmax按颅底骨质侵犯组和颅底骨质非侵犯组进行ROC曲线分析,曲线下面积为0.961,阈值为1.85时,灵敏度为89%,特异性为92%;51例鼻咽癌患者的SUVmean按颅底骨质侵犯组和颅底骨质非侵犯组进行ROC曲线分析,曲线下面积为0.904,阈值为0.55时,灵敏度为82%,特异性为79%。结论全身骨SPECT/CT显像测得基于放射活度的SUV值与鼻咽癌颅底骨质侵犯与否具有良好的相关性,因此SPECT/CT SUV值为鼻咽癌全身骨SPECT/CT显像提供了一种新的具有较高的准确性辅助诊断信息,初步得出在SUVmax为1.85时其对鼻咽癌颅底骨质侵犯诊断价值较高,故SUVmax为1.85可作为最佳诊断阈值。     

18-氟代脱氧葡萄糖代谢显像在宫颈癌诊治中的临床价值

本文主要研究目的是探讨18-氟代脱氧葡萄糖(~(18)F-FDG)单光子发射计算机断层(SPECT/CT)代谢显像在宫颈癌治疗前准确分期及预测预后等方面的临床价值。回顾了27例宫颈癌患者,均行全身~(18)F-FDG SPECT/CT显像,所有图像均通过图像融合软件进行分析。准确测量宫颈癌原发灶、淋巴结的大小及T/B(靶/本底)值。采用SPSS17.0分析比较宫颈癌原发灶T/B值与各临床病理因素之间的关系。病灶根据组织病理学检查、影像学检查及随访确诊。结果显示27例宫颈癌患者宫颈原发灶的T/B值为5.9(3.2),并随临床分期的增加而逐渐增大,≥Ⅱa期者明显高于≤Ⅰb期者(P0.05);而原发灶的T/B值与原发灶最大径、淋巴结转移、病理类型等无明显关系(P0.05)。27例宫颈癌患者全身~(18)F-FDG显像检出13处转移淋巴结;18 F-FDG代谢显像诊断淋巴结转移的敏感性、特异性、准确性、阳性预测值、阴性预测值分别为75.0%、78.9%、77.8%、60.0%、88.2%。转移淋巴结的T/B值为6.3(3.5),其中远处转移淋巴结的T/B值明显高于盆腔淋巴结(P0.05);淋巴结T/B值与淋巴结大小无明显关系(P0.05)。17例患者宫体摄取FDG,其中15例患者经病理证实:2例为宫颈癌浸润宫体;13例为子宫内膜生理性改变摄取FDG,前者T/B值明显高于后者(P0.05)。宫体浸润与淋巴结转移阳性呈正相关(P0.05)。本研究显示,~(18)F-FDG代谢显像对盆腔外和远处淋巴结转移及宫体浸润的诊断具有明显价值,有利于准确分期,并且宫颈癌原发灶的T/B值与分期有关,可在一定程度上反映患者的危险度,初步预测患者预后。     

18F-FDG PET/CT对心脏肿瘤的临床诊断价值

目的 评价18F-FDGPET/CT在心脏肿瘤诊断中的应用价值.方法 回顾性分析自2015年1月至2020年4月在我院行18F-FDG PET/CT常规显像的心脏肿瘤患者共82例,其中男50例,女32例,年龄24～91(56±17)岁.患者分组以手术病理结果或临床随访结果为依据,分析不同病理类型心脏肿瘤的位置、形态等影像学特征及病灶最大标准摄取值(maximum standardized uptake value,SUVmax)的差异,探究18 F-FDG PET/CT对心脏肿瘤良恶性的鉴别能力.结果 82例心脏肿瘤病变患者中,恶性肿瘤组71例,良性肿瘤组11例,良性组及恶性组的中位SUVmax为:1.50和6.62.Mann-Whitney U检验结果显示良性组与恶性组的中位SUVmax差异有统计学意义(Z=-4.796,P = 0.00).组1(淋巴组织肿瘤组)、组2(原发恶性组)、组3(继发恶性组)及组4(良性肿瘤组)的中位SUVmax为:6.42、8.00、6.41及1.50.Mann-Whitney U 检验结果显示组2的中位 SUVmax 均高于组 1、组3,(Z=-0.883,P = 0.037)、(Z =-1.010,P = 0.031),组1及组3之间差异无统计学意义(Z =-0.088,P = 1.930).采用ROC曲线分析确定的鉴别良恶性心脏肿瘤的最佳界值为:SUVmax=3.4,将SUVmax = 3.4作为恶性阈值18F-FDG PET/CT诊断心脏恶性肿瘤的灵敏度为87.3％,特异性为91.0％,准确性为87.3％.结论 常规18F-FDG PET/CT检查可为鉴别诊断心脏病变的良恶性提供帮助.     

99mTc-MIBI显像可预测乳腺癌新辅助化疗的反应性

目的探讨根据乳腺^99mTc-MIBI显像的表现，预测乳腺癌新辅助化疗反应性的临床价值。方法对43例Ⅱ、Ⅲ期的乳腺癌患者，手术前行乳腺癌^99mTc-甲氧基异丁基异睛（^99mTc-MIBI）早期显像和延迟显像。对显像阳性的肿块计算感兴趣区与对侧正常相应部位放射性计数比值，以早期摄取比值（EUR）和延迟摄取比值（DUR）计算滞留指数（RI），之后行2周期的FAC方案化疗。结果在^99mTc-MIBI显像RI≥0组，化疗的有效率为83.3％（25／30），在RI〈0组化疗的有效率23．1％（3／13），两组间差异有显著的统计学意义（P〈0．01）。结论乳腺^99mTc-MIBI显像可以预测新辅助化疗的反应性，指导个性化化疗方案的选择。     

18F-FDG PET/CT在甲状腺结节中的诊断价值

目的 探讨18F-FDG PET/CT在甲状腺良恶性结节中的诊断价值.方法 回顾性分析了48例(男17例,女31例)于本院行18F-FDG PET/CT显像的甲状腺结节患者,所有结节均得到病理证实.利用ROC曲线选取PET/CT半定量指标最大标准摄取值(SUVmax)最佳诊断界值.根据病灶的视觉分级、摄取形态、SUVmax值、CT衰减程度、钙化、突出于甲状腺边界外及病灶边缘是否清晰等七项指标进行综合评分,比较这种综合评分方法与单纯利用SUVmax值判断良恶性的诊断效能,并比较良恶性两组间SUVmax值是否具有差异.最后利用Logistic回归分析七项指标与良恶性结节的相关性.结果 ①SUVmax诊断甲状腺结节的最佳界值为4.71,此时18F-FDG诊断甲状腺恶性病变的灵敏度为80.6％,特异度为75％;②将SUVmax与病理结果对照,发现恶性组SUVmax较良性组明显增高,但恶性组与良性组有重叠;③结合七项指标综合判断结节良恶性的诊断效能较单独利用SUVmax判断良恶性的诊断效能无明显差异(P=0.09);④七项评价指标中SUVmax及CT衰减程度与良恶性相关,对良恶性诊断具有一定价值.结论 ①SUVmax最佳诊断界值为4.71;②良恶性两组间SUVmax差异具有统计学意义;③联合PET及CT多项指标综合诊断不能提高诊断效能;④SUVmax大小及CT中表现为低密度与恶性结节相关,CT中表现为极低密度与良性结节相关,对于良恶性鉴别诊断有一定意义.     

18F-FDG PET/CT在鼻咽癌分期中价值的研究

目的 探讨18F-氟代脱氧葡萄糖(18F-FDG) PET/CT在鼻咽癌分期中的价值.方法 回顾性分析35例鼻咽癌患者相关影像学检查资料,分别根据18F-FDG PET/CT与CT、MR对鼻咽癌患者进行治疗前分期、治疗后再分期,采用Spearman相关性分析全身病灶最大值SUVmax、鼻咽部SUVmax分别与T分期、临床分期的相关性.结果 18F-FDG PET/CT改变了12例治疗前患者的分期,9例治疗后患者的再分期.在再分期的评价中,18F-FDG PET/CT诊断复发转移的灵敏度为100％(9/9)、特异度55.6％ (5/9)、阳性预测值为69.2％ (9/13)、阴性预测值为100％ (5/5).全身最高SUVmax与T分期的相关性为0.677(P ＜0.05),与临床分期的相关性为0.667(P ＜0.05),鼻咽部SUVmax与T分期的相关性为0.71 (P ＜0.05),与临床分期的相关性为0.46(P ＜0.05).结论 18F-FDG PET/CT对鼻咽癌的分期、再分期与临床分期有一定的价值.     

结直肠癌术后循环肿瘤细胞检测的临床意义

目的 探讨结直肠癌(CRC)患者术后外周血循环肿瘤细胞(CTCs)阳性率及其计数与临床病理特征、肿瘤复发转移及预后之间的关系及其临床意义。方法 回顾性分析2016年1月—2017年7月上海交通大学医学院附属第九人民医院首诊并经病理确诊的99例CRC患者的临床资料,其中男66例、女33例,年龄37~79岁。检测患者术后4~8周且辅助治疗前CTCs计数和血清癌胚抗原(CEA)水平,随访患者生存情况,比较患者不同临床病理学特征患者间CTCs表达及计数值的统计学差异,包括性别、年龄、原发灶部位、肿瘤分化程度、原发灶浸润深度(T分期)、区域淋巴结侵袭程度(N分期)、远处转移(M分期)、TNM总分期;观察患者生存情况;采用COX比例风险回归模型进行无进展生存期、总生存期的单因素和多因素分析。结果 99例CRC患者CTCs阳性率为60.6%(60/99),CTCs计数值为0~24(4.909±5.518)。患者的CTCs阳性率和CTCs计数值在T1+T2+T3期、N0期、M0期、Ⅰ~Ⅱ期、CEA＜5 ng/mL和中高分化组患者低于T4期、N1+N2期、M1期、Ⅲ~Ⅳ期、CEA≥5 ng/mL、低分化组患者,差异均有统计学意义(P值均＜0.05)。患者随访3~20个月,死亡22例(22/99,22.2%),其中CTCs阳性21例;疾病进展32例(32/99,32.3%),其中CTCs阳性29例。单因素分析显示:CTCs表达、N分期、M分期、肿瘤分期、和高CEA水平是无进展生存期的影响因素(P值均＜0.05);CTCs表达、N分期、M分期、肿瘤原发灶位于直肠、高CEA水平是总生存期的影响因素(P值均＜0.05)。CTCs和远处转移是CRC患者无进展生存期和总生存期的独立预后因素(HR= 5.418、2.254,95%可信区间:1.595~8.403、1.227~7.986,P值均＜0.05)。结论 在术后CRC患者中,CTCs表达与预后不良有关,对肿瘤复发转移评估具有一定的价值和临床意义。     

鼻咽癌3D pCASL与Ki-67指数相关性及临床分期价值

目的:探讨鼻咽癌三维动脉自旋标记（3D pCASL）与Ki-67指数的相关性及其对临床分期的价值。方法:收集病理证实的鼻咽癌首诊患者48例,其中36例经免疫组化检测Ki-67指数,并对患者以T、N及临床分期分为低、高级别组。所有患者均行鼻咽部MR平扫及增强和3D-ASL序列扫描,并测量肿瘤实质内的血流图平均值（BFmean）、最小值（BFmin）及最大值（BFmax）,利用秩和检验比较高、低级别组间ASL的3个定量参数的差异。分析3个定量参数与Ki-67之间相关性。结果:T、N及临床分期的高级别组BFmean、BFmax及BFmin值均高于低级别组;Ki-67指数与BFmax显著相关（r=0.408, P=0.014）,具有统计学意义（P<0.05）。结论:3D pCASL作为一种无创的功能磁共振灌注成像,可以评估鼻咽癌的血流灌注信息;BFmax可以评价鼻咽癌的增殖程度,有利于评估鼻咽癌患者预后。     

^99mTc—MIBI鼻咽癌阳性显像的探讨

目的用(~99m)Tc-MIBI来探索鼻咽癌的原发灶和转移灶的诊断.资料与方法 用(~99m)Tc-MIBI断层显像检测21例对照组和41例治疗前鼻咽癌病例,病灶的放射性摄取与头皮比较,由3名以上的医师在不知道任何临床情况下分别阅片.结果41例治疗前鼻咽癌病例中共有36例阳性.特异性为91%,灵敏度为88%.结论用(~99m)Tc-MIBI来探索鼻咽癌的原发灶和转移灶的诊断,是一种灵敏的,值得进一步探讨的影像学方法.     

99mTc-HL91肿瘤乏氧显像的动物实验

目的用99mTc-HL91乏氧显像剂对肺腺癌小鼠模型进行体内分布和显像实验,以探索其对肿瘤显像的适用性.方法 99mTc-HL91一步法标记,放化纯>95%.对15只肺腺癌动物模型腹腔注射99mTc-HL91 18.5MBq,于1～24小时处死取血液、肿瘤、脑、肺、心、肝、脾、肾、骨等标本称重,测定放射性计数,计算ID%/g及肿瘤组织与非肿瘤组织放射性比值(T/NT).同时在腹腔注射99mTc-HL91后于不同时间对模型进行静态显像.结果肿瘤组织对99mTc-HL91有较早较高的摄取和滞留,T/NT比值随时间延长而有增高趋势.显像示肿瘤组织有较好的放射性浓聚,图像清晰,对比度良好.结论 99mTc-HL91标记简单,标记率高,使用方便,在肿瘤组织中有较好的摄取与滞留,是一种良好的肿瘤乏氧显像剂,但需要进一步研究其机理和改进方法,提高T/NT比值,以开展临床试验.     

The relation between staging fluorine-18 fluorodeoxyglucose positron emission tomography/computed tomography metabolic parameters and tumor necrosis rate in pediatric osteosarcoma patients

Background/aimThe aim of this study was to investigate the contribution of fluorine-18 (F-18) fluorodeoxyglucose (FDG) positron emission tomography/computed tomography (PET/CT) imaging in staging of pediatric osteosarcoma patients and also to evaluate the ability of metabolic parameters from the primary tumor to predict tumor necrosis rate (TNR).Material and methodsF-18 FDG-PET/CT imaging was performed in staging 37 pediatric osteosarcoma patients. The metabolic parameters SUVmax (maximum standardised uptake value), MTV (metabolic tumour volume), and TLG (total lesion glycolysis) were measured from the primary tumor. TNR level of the primary tumor was histopathologically measured after standard neoadjuvant chemotherapy treatment. The contribution of F-18 FDG-PET/CT to staging of pediatric osteosarcoma patients and the accuracy of metabolic parameters of the primary tumor to predict TNR were analized by regression analysis.Results MTV and TLG of the primary tumor were found to efficiently predict histopathologic TNR, whereas SUVmax was not (P = 0.012, P = 0.027, P = 0.25, respectively). Also 5 of 12 patients (41.6%) who were initially defined as localised osteosarcoma were upstaged in consequence of staging F-18 FDG-PET/CT findings. Conclusion F-18 FDG-PET/CT staging in pediatric osteosarcoma patients can effectively distinguish metastatic-localised disease. MTV and TLG values are important parameters, which can efficiently be used to predict TNR.     

Primary tumor volume should be included in the TNM staging system of nasopharyngeal carcinoma

TNM staging system based on anatomic location, cranial nerve and conventional radiation therapy is currently the widely used classification for nasopharyngeal carcinoma (NPC). However, the T classification in separation of primary tumor volume fail to predict the radiosensitivity of primary tumor. And with the advent of intensity-modulated radiation therapy (IMRT), increasing studies show the significance of the primary tumor volume on the treatment outcome of NPC patients and primary tumor volume significantly improve the prognostic validity of T classification in NPC. What’s more, the current T staging system has limitations to provide appropriate treatment for different subgroup NPC patients. Therefore, we propose that primary tumor volume should be included in the TNM staging system of nasopharyngeal carcinoma to guide our clinical decision.     

Prognostic Value of 18F-Fluorodeoxyglucose Positron Emission Tomography in Patients with Resectable Pancreatic Cancer

Purpose

We evaluated the prognostic value of ¹⁸F-2-fluoro-2-deoxyglucose positron emission tomography (FDG PET) in patients with resectable pancreatic cancer.

Materials and Methods

We retrospectively reviewed the medical records of pancreatic cancer patients who underwent curative resection, which included 64 consecutive patients who had preoperative FDG PET scans. For statistical analysis, the maximal standardized uptake value (SUVmax) of primary pancreatic cancer was measured. Survival time was estimated by the Kaplan-Meier method, and Cox''s proportional hazard model was used to determine whether SUVmax added new predictive information concerning survival together with known prognostic factors. p<0.05 indicated statistical significance.

Results

Overall survival (OS) and disease-free survival (DFS) were respectively 42.9 months (27.6-58.2; 95% CI) and 14.9 months (10.1-19.7; 95% CI). When subjects were divided into two groups according to SUVmax with a cutoff value of 3.5, the high SUVmax group (n=32; SUVmax >3.5) showed significantly shorter OS and DFS than the low SUVmax group. Multivariate analysis of OS and DFS showed that both high SUVmax and poor tumor differentiation were independent poor prognostic factors.

Conclusion

Our study showed that degree of FDG uptake was an independent prognostic factor in pancreatic cancer patients who underwent curative resection.     

PET/CT对鼻咽癌的分期、再分期、临床分期及疗效监测的价值

目的 分析PET/CT在鼻咽癌的分期、再分期、临床分期中的应用及在监测疗效中的价值.方法 选取2014年6月至2016年1月间我院收治的172例NPC患者作为本研究对象,使用GE Discovery DST PET/CT 18F-FDG显像仪对患者行影像学检查;分析影像学检查在NPC的分期、再分期、临床分期中的应用,并探讨其在临床疗效检测时的应用价值.结果首次分期采用PET/CT影像学检查的诊断灵敏度及准确性均显著高于CT/MRI检测(P<0.05);再分期两组检测方法的诊断灵敏度、准确性、阳性预测值、阴性预测值差异具有统计学意义(P<0.05);临床疗效监测时两种检查方法的诊断灵敏度、准确性、阴性预测值差异具有统计学意义(P<0.05).结论 PET/CT在NPC的分期、再分期、临床分期中的应用具有准确性、灵敏度较高的优点,且其在疗效监测时具有较好的临床应用价值.     

The pretreatment of maximum standardized uptake values (SUVmax) of the primary tumor is predictor for poor prognosis for patients with epithelial ovarian cancer

The purpose of this study was to evaluate prognostic factors for epithelial ovarian cancer. We found that the pretreatment values of maximum standardized uptake (SUVmax) of the primary tumor by positron emission tomography/computed tomography (PET/CT), tumor marker CA125 and C-reactive protein (CRP) were correlated with clinical characteristics and prognosis for such patients. The clinical parameters and prognoses and their correlations with SUVmax of primary tumor, CA125 and CRP were examined for 51 patients with primary ovarian cancer. The SUVmax of the primary tumor had a statistically significant association with stage (p = 0.010) and histology (p = 0.001). CA125 was significant associated with stage (p = 0.011), histology (p = 0.005) and lymph node metastasis (p = 0.025). CRP was also significantly associated with stage (p = 0.049). Disease-free survival rates of patients exhibiting a high SUVmax, CA125 and CRP were significantly lower than those exhibiting a low SUVmax, CA125 and CRP levels (p = 0.008, 0.034, and 0.037, respectively). Furthermore, overall survival rates of patients exhibiting a high SUVmax were significantly lower than those exhibiting a low SUVmax (p = 0.049).The high SUVmax of primary tumor is an important factor for identifying ovarian cancer patients with a predictor for poor prognosis.     

Improved image resolution on thoracic carcinomas by quantitative 18F-FDG coincidence SPECT/CT in comparison to 18F-FDG PET/CT

Currently, ¹⁸F-FDG coincidence SPECT (Co-SPECT)/CT scan still serves as an important tool for diagnosis, staging, and evaluation of cancer treatment in developing countries. We implemented full physical corrections (FPC) to Co-SPECT (quantitative Co-SPECT) to improve the image resolution and contrast along with the capability for image quantitation. FPC included attenuation, scatter, resolution recovery, and noise reduction. A standard NEMA phantom filled with 10:1 F-18 activity concentration ratio in spheres and background was utilized to evaluate image performance. Subsequently, 15 patients with histologically confirmed thoracic carcinomas were included to undergo a ¹⁸F-FDG Co-SPECT/CT scan followed by a ¹⁸F-FDG PET/CT scan. Functional parameters as SUVmax, SUVmean, SULpeak, and MTV from both quantitative Co-SPECT and PET were analyzed. Image resolution of Co-SPECT for NEMA phantom was improved to reveal the smallest sphere from a diameter of 28 mm to 22 mm (17 mm for PET). The image contrast was enhanced from 1.7 to 6.32 (6.69 for PET) with slightly degraded uniformity in background (3.1% vs. 6.7%) (5.6% for PET). Patients' SUVmax, SUVmean, SULpeak, and MTV measured from quantitative Co-SPECT were overall highly correlated with those from PET (r=0.82–0.88). Adjustment of the threshold of SUVmax and SUV to determine SUVmean and MTV did not further change the correlations with PET (r=0.81–0.88). Adding full physical corrections to Co-SPECT images can significantly improve image resolution and contrast to reveal smaller tumor lesions along with the capability to quantify functional parameters like PET/CT.     

鼻咽癌组织中c-IAP2的表达及其临床意义

目的 探究细胞凋亡抑制蛋白2(cellular inhibitor of apoptosis protein 2,c-IAP2)在鼻咽癌组织中的表达以及临床意义.方法 回顾性分析95例鼻咽癌患者的肿瘤组织和40例正常患者的鼻咽组织及临床预后资料,分别利用RT-PCR、Western印迹以及免疫组织化学染色检测上述组织中...     

Fine needle aspiration as a diagnostic modality for Warthin tumors identified as fluorodeoxyglucose positron emission tomography/computed tomography-positive

Limited evidence exists regarding the 2-deoxy-2-[fluorine-18]-fluoro-D-glucose (FDG) avidity of Warthin tumors, the second most common benign parotid gland tumor. This study aims to clarify this aspect by analyzing patients who underwent FDG positron emission tomography/computed tomography (PET/CT) and quantifying tumor standardized uptake values (SUV). Medical records of 29 patients with fine needle aspiration (FNA)-confirmed Warthin tumors who underwent FDG-PET/CT near the diagnosis of Warthin tumor were reviewed. Key parameters included cancer history, cytologic diagnosis of Warthin tumor, maximum SUV on FDG PET/CT, and tumor localization. Among the cohort, 18 males and 11 females (average age: 67.9 years) were included. Most patients had malignant neoplasms (lung, head and neck, breast, others). One patient had synchronous liver cancer. Three individuals had bilateral Warthin tumors, and three had bifocal tumors, resulting in 35 tumors for analysis. Tumors were located in the parotid gland (28) and vicinity (7). SUVmax for the Warthin tumors ranged from 3.6 to 26.8, with an average SUVmax of 10.1. Warthin tumors exhibit significant and variable FDG accumulation, exceeding expectations and mimicking high-grade malignancies. Awareness of this phenomenon is crucial for accurate staging and timely management. In cases of positive FDG PET/CT uptake in periparotid, perimandibular, and upper jugular areas, FNA is recommended to avoid misinterpretation or delays in management.