US-FNAB 在甲状腺良恶性结节鉴别诊断中的应用价值

目的:探讨超声引导下甲状腺穿刺活检(US-FNAB)对甲状腺良恶性结节的诊断价值。方法:本研究选取了60例已做过甲状腺结节手术的患者,入院后先行常规超声(US)检查后行超声引导下甲状腺穿刺活检(US-FNAB)通过观察并记录良恶性结节诊断结果:,诊断结果:符合率及诊断结果:符合率与结节大小的关系,评价US-FNAB对甲状腺良恶性结节的诊断价值。结果:常规超声诊断出恶性结节4例,良性结节33例;超声引导下细针穿刺活检诊断出恶性结节8例,良性结节40例。US组中,15例误诊,8例漏诊中,诊断符合率为61.7%。US-FNAB组中,4例误诊,漏诊2例,诊断符合率80.0%。经统计学分析,US-FNAB组诊断符合率明显高于US组(P0.05),US组与US-FNAB组在各结节直径的患者分布上相比差异无统计学意义(P0.05)。两组组内各结节直径的患者分布上相比差异也无统计学意义(P0.05)。US-FNAB组中,随着结节直径增大,诊断符合率略有降低。对直径10mm的甲状腺结节诊断率达100%。结论:US-FNBA对甲状腺良恶性结节具有较高的诊断准确性,诊断准确性受结节大小影响较小,对直径较小的甲状腺结节检出率较高。     

甲胎蛋白异质体在肝细胞癌中的诊断价值分析

目的:探讨甲胎蛋白异质体(AFP-L3)的检测对肝细胞肝癌(HCC)的诊断价值。方法:选取2009年2月至2012年11月在本院治疗的90例HCC患者为研究组,另选择同期接受治疗的慢性乙型肝炎患者30例和肝炎肝硬化患者30例作为对照组。观察三组患者的AFP、AFP-L3阳性率。结果:肝癌患者AFP和AFP-L3阳性率显著高于乙肝和肝硬化患者,差异具有统计学意义(P0.05)。乙肝和肝硬化两组患者的AFP及AFP-L3阳性率无显著差异(P0.05)。AFP400 ng/m L:肝癌组AFP-L3阳性率显著高于乙肝组和肝硬化组,差异具有统计学意义(P0.05)。结论:AFP-L3在HCC中的诊断价值较甲胎蛋白大,更适合在临床诊断中应用。     

常规灰阶超声评分和血清促甲状腺激素检测在单发性甲状腺结节性质诊断中的价值分析

目的:分析常规灰阶超声评分和血清促甲状腺激素(TSH)检测在单发性甲状腺结节性质诊断中的价值。方法:选取89例单发性甲状腺结节患者作为研究对象,其中,54例为恶性结节,35例为良性结节,对所有患者的术前常规灰阶超声评分和血清TSH水平进行观察和比较。结果:恶性结节组患者的常规灰阶超声评分和血清TSH水平均高于良好结节组,差异均有统计学意义(P0.05);常规灰阶超声评分与血清TSH水平诊断恶性单发性甲状腺结节的AUC分别为0.634和0.932;Logistic多元回归分析结果显示常规灰阶超声评分、血清TSH水平均与恶性单发性甲状腺结节的发生具有独立相关性(Waldx~2=23.179、10.992,P0.05),联合应用常规灰阶超声评分和血清TSH水平检测诊断恶性单发性甲状腺结节的AUC为0.900,95%置信区间为(0.833~0.967),在Cutoff值下的灵敏度和特异度分别为0.963和0.743。结论:常规灰阶超声评分在诊断甲状腺结节性质中具有一定的价值,将其与血清TSH水平检测进行联合应用时,可显著提高诊断的灵敏度。     

超声造影在肝硬化合并肝内局灶性小病灶中的诊断价值

目的:探讨超声造影(CEUS)在肝硬化合并肝内局灶性小病灶(≤3.0 cm)中的诊断价值。方法:选择我院自2010年4月至2014年8月患有肝硬化合并肝内局灶性小病灶的患者100例,采用MRI、CT及病理确定病灶良恶性,同时对比影像结果,计算常规超声和CEUS的准确性。结果:MRI、CT及病理确定病灶105个,其中恶性组45例,良性组60例,超声造影技术能清晰的显示出血流灌注的情况以及动脉相、门脉相及延迟相的特点。数据统计结果显示常规超声和CEUS的准确性、特异性和敏感性分别为59.05%、77.78%、45.00%和95.24%、95.56%、95.00%,两者之间的差异具有统计学意义(P0.05)。结论:相对于常规超声,CEUS对患有肝硬化合并肝内局灶性小病灶的患者具有更高的诊断价值。     

阴道超声与宫腔镜诊断对围绝经期女性异常子宫出血病因的研究对比

目的:研究阴道超声与宫腔镜诊断对围绝经期女性异常子宫出血(Abnormal uterine bleeding,AUB)病因的对比。方法:从2012年3月到2013年3月,我院共有123例围绝经期AUB患者需行手术治疗。全部患者均于术前实施阴道超声检查及宫腔镜检查,分别归入阴道超声组及宫腔镜组,并于术后常规实施病理确诊,并将所得结果作为金标准分别对比。结果:根据术后的病理检查,最终确定患者子宫内膜为正常者4例,内膜增生44例,内膜息肉29例,黏膜下肌瘤26例,内膜癌20例。宫腔镜组在内膜增生及内膜息肉方面的诊断结果与病理检查结果最为接近,诊断结果显著优于阴道超声组,差异均有统计学意义(均P0.05)。但两组在正常内膜、黏膜下肌瘤以及内膜癌等方面的诊断结果对比,差异均无统计学意义(均P0.05)。宫腔镜组与病理检查的符合率在黏膜下肌瘤及内膜癌方面较阴道超声组与病理检查结果的符合率更高,但差异无统计学意义(P0.05)。尤其是关于内膜增生和内膜息肉的符合率,宫腔镜组显著高于阴道超声组,差异有统计学意义(均P0.05)。结论:宫腔镜诊断方案对于围绝经期女性AUB患者的诊断结果更接近于病理结果,但临床在一定条件可与阴道超声联用,以期进一步提升诊断符合率。值得临床推荐。     

常规高频超声联合超声弹性成像在甲状腺良恶性结节鉴别诊断中的应用价值

目的:研究常规高频超声与超声弹性成像在甲状腺结节良恶性鉴别诊断中的应用价值。方法:选择住院的甲状腺结节性疾病患者120例(146个甲状腺结节)。对患者进行常规高频超声和超声弹性成像检查,以术后病理检查为金标准,计算不同方法对甲状腺良恶性结节鉴别诊断的灵敏度、特异度、准确度。结果:120例患者,经手术病理检查证实有146个结节,其中良性结节98个,恶性结节48个。常规高频超声显示在形态、边界、包膜、内部回声、微钙化及RI值上,甲状腺良、恶性结节之间的差异有统计学意义(P0.05)。常规高频超声与弹性成像相比,诊断效能之间的差异无统计学意义(P0.05);常规高频超声与联合超声诊断的灵敏度(X~2=12.22,P0.01)、特异度(X~2=10.21,P0.01)、准确度(X~2=9.31,P0.01)相比较,差异具有统计学显著性;超声弹性成像与联合超声诊断灵敏度(X~2=6.51,P0.01)、特异度(X~2=5.82,P0.05)、准确度(X~2=4.56,P0.05)相比,差异具有统计学显著性。结论:常规高频超声联合超声弹性成像对甲状腺良恶性结节的诊断灵敏度和准确度高,值得进一步推广临床应用。     

经阴道超声与宫腔镜对子宫内膜病变患者的诊断价值比较研究

目的:探讨经阴道超声与宫腔镜检查诊断子宫内膜病变的临床价值,为临床诊断子宫内膜病变提供理论依据。方法:选取2011年3月-2014年3月间我院收治的158例疑似子宫内膜病变患者,分别采用经阴道超声和宫腔镜进行检查,并以病理诊断结果为"金标准",比较两种检查方法的诊断价值。结果:病理检查结果中,143例患者被确诊为子宫内膜病变,其中子宫内膜增生23例(16.08%),子宫内膜息肉31例(21.68%),子宫粘膜下肌瘤24例(16.78%),子宫内膜癌19例(13.29%),慢性非特异性子宫内膜炎46例(32.17%)。宫腔镜对子宫内膜病变诊断的准确率为94.41%,高于阴道超声的81.12%,差异有统计学意义(P0.05),其中阴道超声和宫腔镜对子宫粘膜下肌瘤、子宫内膜癌诊断的准确率比较差异无统计学意义(P0.05),阴道超声对子宫内膜增生、子宫内膜息肉及慢性非特异性子宫内膜炎的诊断准确率均较宫腔镜降低,差异有统计学意义(P0.05)。阴道超声对子宫内膜病变诊断的特异度较宫腔镜更低(P0.05),但两者灵敏度、AUC比较差异无统计学意义(P0.05)。结论:经阴道超声诊断子宫内膜病变简单、有效,而宫腔镜诊断子宫内膜病变具有准确率以及特异度较高的特点。     

超声检查联合MMP-2、MMP-9水平检测对甲状腺癌的诊断价值

目的:探讨超声检查联合基质金属蛋白酶-2(MMP-2)、基质金属蛋白酶-9(MMP-9)水平检测对甲状腺癌的诊断价值。方法:选取2014年6月-2016年6月我院收治的480例甲状腺结节患者作为研究对象,根据患者病情分为良性结节患者412例(良性结节组)和甲状腺癌患者68例(甲状腺癌组)。对所有患者进行超声检查与MMP-2、MMP-9水平检测,比较两组MMP-2、MMP-9水平,并比较超声检查与超声联合MMP-2、MMP-9水平检测对甲状腺癌的诊断价值。结果:甲状腺癌组MMP-2、MMP-9水平均显著高于良性结节组(P0.05),且甲状腺癌组超声弹性图像评分多为3~4分,良性结节组则多为0~2分,两组超声弹性成像评分所占比例比较差异有统计学意义(P0.05);超声联合MMP-2、MMP-9诊断良性甲状腺结节的阴性率和甲状腺癌的阳性率均高于超声诊断,差异有统计学意义(P0.05);超声联合MMP-2、MMP-9的灵敏性、特异性、准确性分别为89.7%、85.2%、85.8%,均显著高于超声诊断的76.5%、68.7%、69.8%,差异有统计学意义(P0.05)。结论:超声检查联合MMP-2、MMP-9水平检测能够有效鉴别甲状腺癌,其灵敏性、特异性、准确性均较高,值得在临床上推广。     

超声造影具较高肝硬化合并小肝癌的早期诊断率

为研究超声造影(CEUS)对肝硬化合并小肝癌(SHCC)的早期诊断价值,本研究随机选取肝硬化合并小肝癌患者33例,共计病灶36个。对透明细胞癌病灶的造影显示,其开始增强时间和增强峰值时间均大于中、低、高分化癌,而开始消退时间显著大于中低分化癌,显著低于高分化癌(p0.05);对小肝癌病灶的造影显示,开始增强时间与增强峰值时间差异不显著(p0.05),而高分化癌的开始消退时间显著高于中低分化癌(p0.05);关于超声造影增强模式,病灶在不同分化期呈现出了不同的造影特点。超声造影后,10个病灶较超声造影前诊断评分有所提高,其中5个病灶的诊断评分较超声造影前提高2分。经回顾性分析算得91.67%的病灶检出病情,69.44%的病灶可确诊。结果表明,超声造影对肝硬化合并小肝癌的确诊率较高,本研究为肝硬化合并小肝癌的临床分析提供了诊断依据。     

绝经后阴道出血妇科超声诊断分析

目的:分析妇科超声诊断绝经后阴道出血效果,分析不同病理超声图像特点。方法:回顾性分析182例绝经后阴道出血患者病历资料,评价超声诊断效用。结果:肿瘤患者144例,良性病变患者38例;超声敏感度85.42%、特异度78.95%、准确率91.21%;误诊29例,其中不典型增生24例,增生4例,息肉1例,病理分期Ⅰ期26例、Ⅱ期0例、Ⅲ期3例;恶性疾病内膜厚度高于良性,诊断符合内膜厚度高于误漏诊,差异具有统计学意义(P0.05)。结论:超声定性诊断绝经后阴道出血准确率较高,可基本满足疾病筛查需要,但对于早期增生性疾病误漏诊率相对较高,内膜厚度是重要的诊断标准。     

Fine needle aspiration biopsy of hepatocellular carcinoma and hepatocellular nodular lesions: role,controversies and approach to diagnosis

A. Wee
Fine needle aspiration biopsy of hepatocellular carcinoma and hepatocellular nodular lesions: role, controversies and appr oach to diagnosis The role of fine needle aspiration (FNA) biopsy of the liver has evolved. Advances in imaging modalities have obviated the need for tissue confirmation in clinically classic hepatocellular carcinoma (HCC). The risks of needle tract seeding and haematogenous dissemination have been actively debated. Nowadays, cytopathologists are confronted by smaller and smaller nodules, detected due to increased surveillance of high‐risk cirrhotic patients. Tissue characterization of small well‐differentiated hepatocellular nodular lesions (size less than and equal to 2 cm) is extremely challenging and has therapeutic implications. Major issues in the cytodiagnosis of HCC include: (i) distinguishing benign hepatocellular nodular lesions, namely, large regenerative nodules, dysplastic nodules, focal nodular hyperplasia and hepatocellular adenoma from reactive hepatocytes; (ii) distinguishing well‐differentiated HCC from benign hepatocellular nodular lesions; (iii) distinguishing poorly differentiated HCC from intrahepatic cholangiocarcinoma and metastatic carcinomas; (iv) determining the histogenesis of a malignant tumour; and (v) determining the site of origin of a malignant tumour. An overview of the biological evolution and histopathological aspects of dysplastic nodules, small HCCs and ‘nodule‐in‐nodule’ lesions is presented in tandem with clinically relevant nomenclature. An algorithmic approach to FNA diagnosis of HCC and hepatocellular nodular lesions is outlined. Optimal results depend on (i) a dedicated radiologist‐cytopathologist team; (ii) an on‐site cytology service, (iii) a combined cytohistological approach, (iv) immunohistochemistry, and (v) clinicopathological correlation. As we move towards personalized medicine, it is envisaged that hepatic FNA is likely to become a point of care in the management protocol as it takes on the additional role of procurement of tumour and peritumoural tissues for genomic and proteomic profiling to enable targeted molecular therapy.     

Diagnostic Use of Ultrasonography in Patients with Nodular Thyroid Disease

ObjectiveTo review the published reports pertaining to the diagnostic utility of ultrasonography for evaluation of thyroid nodules.MethodsVarious roles for diagnostic thyroid ultrasonography and screening ultrasound studies of the thyroid are discussed, and ultrasound characteristics of thyroid nodules and their association with malignant potential are described.ResultsIn two studies that correlated ultrasound findings with physical examination findings in patients with a solitary thyroid nodule detected by palpation, 16% of such patients had no corresponding nodule evident on ultrasonography, and 45% of such patients had an additional nodule detected by ultrasonography. Similarly, approximately 18% of patients with a palpable multinodular thyroid had no nodules larger than 1 cm in diameter on ultrasound studies. Thyroid nodules larger than 1 cm have been found by ultrasonography to be present in from 2 to almost 5% of the population with normal findings on examination of the thyroid. Use of screening ultrasound study of the thyroid has been suggested for patients with a history of childhood irradiation to the head and neck or a family history of thyroid cancer. Numerous investigations that have evaluated ultrasound features of thyroid nodules have suggested five characteristics as suggestive of malignant potential—hypoechogenicity, microcalcifications. irregular or microlobulated border, absent or irregular thick halo, and increased intranodular vascularity.ConclusionCorrelation of ultrasound and palpation findings will provide a comprehensive evaluation of nodular thyroid disease. Moreover, real-time ultrasonography facilitates characterization of features associated with an increased risk of a malignant lesion. High-resolution thyroid ultrasonography is a dynamic tool for endocrinologists. (Endocr Pract. 2004;10:246-252)     

Histogenesis of hyperplasia and carcinomas of the liver arising around central veins in mice ingesting chlorinated hydrocarbons.

The development of hyperplastic and neoplastic lesions of parenchymal cells of the liver adjacent to central veins was observed in C3H mice ingesting the chlorinated hydrocarbons, dieldrin or aldrin, in the diet. Lesions could be followed from pericentral hyperplasia to areas of hyperplasia, nodules of hyperplasia, small hepatocellular carcinomas, and large well-developed carcinomas, occasionally with metastases. Sometimes pericentral hyperplasia was diffuse throughout most or all of one lobe of the liver. These hyperplastic cells collided to become one large nodule and also one large carcinoma. The carcinomas were well-differentiated or moderately well-differentiated and grew on transplantation to isologous hosts. Histologically, the hyperplastic cells adjacent to central veins were increased in size, frequently with double nuclei. Carcinoma cells varied in size and shape and were huge with large nuclei, prominent nucleoli, and eosinophilic cytoplasm. Similar hepatocellular carcinomas were seen previously with carbon tetrachloride, another organochlorine chemical.     

Utility of CD34 reactivity in evaluating focal nodular hepatocellular lesions sampled by fine needle aspiration biopsy

OBJECTIVE: To determine the patterns of CD34 reactivity in hepatocellular adenoma and focal nodular hyperplasia and to evaluate the utility of CD34 reactivity in the diagnosis of hepatocellular carcinoma. STUDY DESIGN: Seventeen cases of well-differentiated hepatocellular carcinoma, 14 cases of cirrhosis, 9 cases of focal nodular hyperplasia and 7 cases of hepatocellular adenoma were stained with immunoperoxidase antibodies to CD34. The slides were scored according to the degree of lesional reactivity. RESULTS: Fourteen of 17 cell blocks with hepatocellular carcinoma showed unequivocal sinusoidal or peripheral reactivity for CD34. Five of seven cases of hepatocellular adenoma and four of nine cases of focal nodular hyperplasia showed > 50% sinusoidal reactivity for CD34. All 14 cases of cirrhosis showed peripheral to no sinusoidal reactivity. CONCLUSION: CD34 reactivity in a diffuse sinusoidal pattern can be helpful in the diagnosis of hepatocellular carcinoma. However, consideration should be given to the possibility of hepatocellular adenoma and focal nodular hyperplasia, which can also exhibit significant diffuse CD34 reactivity. In these cases, a reticulin stain may be helpful with the differential diagnosis.     

Predicting Malignant Involvement in a Thyroid Nodule: Role of Ultrasonography

ObjectiveTo assess how ultrasonography can contribute during the evaluation of a thyroid nodule and whether this technique can have a role in predicting malignant involvement.MethodsIn this retrospective study, data were analyzed on 220 consecutive patients (with 348 thyroid nodules) who underwent thyroidectomy and had previously undergone assessment by high-resolution thyroid ultrasonography. Nodule size, echogenicity, regularity of margins, halo sign, presence or absence of calcifications, and invasion of surrounding tissues were evaluated. The nodules were classified as low, medium, or high risk for malignant involvement on the basis of nodule characteristics found on ultrasonography. All nodules were submitted to cytologic examination by fine-needle aspiration (FNA) before thyroidectomy. Ultrasound, FNA, and pathologic postoperative results were compared.ResultsAmong the 348 thyroid nodules, 56 were ultrasonographically classified as low risk, 268 as medium risk, and 24 as high risk for malignant potential. Fifty of 56 (89.3%) low-risk nodules and 213 of 268 (79.5%) medium-risk nodules were diagnosed as benign at pathologic postoperative examination. In contrast, however, only 6 of 24 (25%) high-risk nodules were diagnosed as benign. Among the 18 high-risk nodules of 1-cm diameter or larger, FNA showed a 20% false-negative result.ConclusionHigh-risk classification of a thyroid nodule on ultrasonography had a positive predictive value for malignant involvement of 75%. Nodule characteristics analyzed by ultrasonography should be considered at the time of surgical intervention. (Endocr Pract. 2007;13: 219-224)     

肝脏局灶性结节增生的超声诊断

目的探讨超声对肝脏局灶性结节增生的诊断价值。方法采用基波超声对37例肝脏局灶性结节增生（FNH）进行检查,并进行超声造影。结果基波超声37例呈稍低回声或稍高回声,其中4例（10．8％）病灶中心回声不均,可见不规则低回声,血供丰富。超声造影提示动脉期37例（100％）高增强,其中7例（18．9％）可见特征性轮辐状增强。门脉期30例（81．1％）呈高增强,7例（18．9％）呈稍高或等增强。实质期20例（54．1％）呈高增强,17例（45．9％）呈等增强。结论超声对肝脏局灶性结节增生的诊断具有一定特征性,超声造影能提高对FNH的诊断准确性。     

超声弹性成像联合血清TSH、TT3、TT4在甲状腺结节良恶性诊断的临床价值研究

目的:探讨超声弹性成像联合血清促甲状腺激素(TSH)、总三碘甲状腺原氨酸(TT3)、总甲状腺素(TT4)在甲状腺结节良恶性诊断的临床价值。方法:选择2018年1月至2019年12月我院收治的甲状腺结节患者80例,根据病理检查结果分为良性结节组(48例),恶性结节组(32例),所有患者术前进行血清TSH、TT3、TT4及超声弹性成像检查,比较各组血清TSH、TT3、TT4水平及超声弹性成像评分,分析甲状腺结节患者血清TSH、TT3、TT4水平与超声弹性成像评分的相关性,超声弹性成像联合血清TSH、TT3、TT4在甲状腺恶性结节诊断的临床价值。结果:恶性结节组血清TSH、TT3、TT4水平显著高于良性结节组,超声弹性成像评分高分比例显著高于良性结节组(P<0.05),经Pearson相关分析显示,甲状腺结节患者血清TSH、TT3、TT4水平与超声弹性成像评分呈正相关(P<0.05)。以病理诊断为金标准,超声弹性成像联合血清TSH、TT3、TT4诊断甲状腺恶性结节的灵敏度为96.88%,特异度为93.75%,准确度为95.00%,灵敏度、特异度和准确度优于单独血清TSH、TT3、TT4检测和单独超声弹性成像检测。结论:超声弹性成像联合血清TSH、TT3、TT4对甲状腺结节良恶性的鉴别诊断具有较好的临床价值。     

孤立性肺结节患者血清CEA、NSE、Cyfra21-1水平与结节直径的关系及联合高分辨率CT的诊断价值研究

摘要 目的：研究孤立性肺结节（SPN）患者血清癌胚抗原（CEA）、神经特异性烯醇化酶（NSE）、细胞角蛋白19片段（Cyfra21-1）水平与结节直径的关系及联合高分辨率CT的诊断价值。方法：将医院从2017年3月～2020年3月期间收治的SPN患者154例纳入研究。根据术后病理检查结果分为恶性结节组104例和良性结节组50例。对所有患者均进行高分辨率CT胸部增强扫描,并比较不同结节患者的CT影像征象表现。此外,检测并比较不同结节患者的血清CEA、NSE、Cyfra21-1水平,分析血清CEA、NSE、Cyfra21-1与结节直径的关系。通过受试者工作特征（ROC）曲线分析血清CEA、NSE、Cyfra21-1水平联合高分辨率CT诊断SPN良恶性的效能。结果：肺恶性结节患者胸部CT影像征象表现为毛刺征、深分叶征、胸膜凹陷征、血管集数征、棘突征人数占比均高于良性结节,而钙化征人数占比低于良性结节（均P＜0.05）。肺恶性结节患者的血清CEA、NSE、Cyfra21-1水平均明显高于良性结节患者（均P＜0.05）。结节最大直径＞2.0 cm的SPN患者血清CEA明显高于结节最大直径1.0～2.0 cm患者,而结节最大直径1.0～2.0 cm患者血清CEA明显高于结节最大直径＜1.0c m患者（均P＜0.05）;且经Spearman相关性分析显示,血清CEA水平与SPN患者结节直径呈正相关,而血清NSE、Cyfra21-1水平与SPN患者结节直径无相关性。经ROC曲线分析可得,血清CEA、NSE、Cyfra21-1联合高分辨率CT诊断SPN良恶性的曲线下面积、灵敏度、特异度均明显高于上述各项血清学指标和高分辨率CT单独诊断。结论：SPN患者血清CEA水平与结节直径呈正相关,而血清NSE、Cyfra21-1水平与结节直径无明显相关,血清CEA、NSE、Cyfra21-1联合高分辨率CT诊断SPN良恶性的价值较高。     

甲状腺结节良恶性的彩色多普勒超声特征及其诊断价值分析

目的:研究甲状腺结节良恶性的彩色多普勒超声特征及其诊断价值。方法:选取从2016年3月~2019年2月于我院接受手术治疗的甲状腺疾病患者300例作为研究对象,均予以彩超检查,比较甲状腺良恶性结节的超声特征(主要包括直径、钙化情况、边界、回声、血流状况)。以病理活检结果为金标准,分析彩超诊断甲状腺结节良恶性的敏感性、特异性以及准确度。对比甲状腺良恶性结节的血流分型情况以及各项血流动力学参数。结果:恶性结节超声特征直径≥2 cm、有钙化、边界模糊、无回声/低回声、血流丰富人数占比均高于良性结节(均P<0.05)。以手术病理组织活检结果作为金标准,彩色多普勒超声诊断甲状腺结节的敏感性、特异性以及准确度分别为97.73%、86.11%、96.33%。甲状腺良性结节血流分型为Ⅰ型、Ⅱ型人数占比高于恶性结节,而Ⅲ型、Ⅳ型人数占比低于恶性结节(均P<0.05)。甲状腺良性结节的收缩期峰值血流速度(PSV)、阻力指数(RI)均低于恶性结节,而舒张末期血流速度(EDV)高于恶性结节(均P<0.05)。结论:彩色多普勒超声对甲状腺结节良恶性的鉴别价值较高,且具有较高的敏感性、特异性以及准确度,可为甲状腺良恶性结节的早期诊断、临床治疗提供重要的参考依据。