Hedgehog信号通路在胰腺癌中的表达与表皮生长因子受体的关系

目的 探讨胚胎发育信号通路Sonic hedgehog(SHH)在胰腺癌组织中的表达及其与表皮生长因子受体(EGFR)的关系.方法 逆转录-聚合酶链反应(RT-PCR)和Western blot法分别检测胰腺癌组织及癌旁组织中SHH和EGFR的mRNA和蛋白表达.结果 SHH mRNA和蛋白在胰腺癌组织中的阳性率分别为81.6%和79.6%,与癌旁组织比较,差异有统计学意义(P＜0.05).EGFR mRNA和蛋白在胰腺癌组织中的阳性率均为73.5%,与癌旁组织比较,差异有统计学意义(P＜0.05).SHH和EGFR蛋白表达与年龄、肿瘤大小、组织学类型和肿瘤部位等病理因素均无明显相关(P＞0.05),而在不同淋巴结转移状况和TNM分期的病例组中,两者表达差异有统计学意义(P＜0.05).配对资料的Spearman相关分析显示,SHH表达与EGFR表达呈正相关(r=0.232,P＜0.05).结论 SHH和EGFR信号通路在胰腺癌组织中呈活化状态,两者之间的相互作用对胰腺癌的发生发展可能有重要影响.     

表皮生长因子受体与乳酸脱氢酶在胰腺癌中的表达及意义的TIMER数据库分析

目的:应用生物信息学方法探讨表皮生长因子受体(EGFR)及乳酸脱氢酶(LDHA)在胰腺癌局部免疫微环境中的表达及意义。方法:运行TIMER(Tumor IMmune Estimation Resource)数据库,获取178例胰腺癌患者的临床信息,以及患者组织标本中EGFR、LDHA、胰腺癌相关信号分子的表达以及各亚群免疫细胞浸润数据,通过人类蛋白表达图谱,搜索EGFR、LDHA以及胰腺癌相关信号分子的蛋白表达丰度。采用Log-rank检验及Cox比例风险回归模型分析EGFR与LDHA表达以及各亚群免疫细胞与其他临床因素对患者预后的影响,并分析EGFR与LDHA与两者与胰腺癌相关信号分子的关系。结果:胰腺癌组织中EGFR与LDHA mRNA的表达水平均明显高于正常胰腺组织(均P0.05);在胰腺癌组织中,EGFR和LDHA mRNA呈正相关(P0.001)。EGFR mRNA高表达、LDHA mRNA高表达、低水平CD4~+T细胞的胰腺癌患者总体生存率较差(均P0.05)。LDHA是胰腺癌的独立预后因素(P0.001)。EGFR与胰腺癌相关信号分子P38、FOXM1、PD-L1、CSF1、CSF1R表达呈明显正相关,而LDHA与FOXM1、CSF1、CSF1R表达呈明显正相关(均P0.001)。EGFR、LDHA、P38、FOXM1和CSF1R蛋白在胰腺癌组织的表达丰度高于正常胰腺组织。结论:在胰腺癌组织中,EGFR与LDHA的表达升高,两者尤其是LDHA,可能通过对胰腺癌相关信号分子表达及局部免疫微环境的调控,从而影响患者预后。     

抗表皮生长因子受体单链抗体联合放化疗治疗裸鼠移植胰腺癌的研究

目的 针对表皮生长因子受体(EGFR)的腺相关病毒(AAV)介导的靶向治疗作为一种新的治疗方式具有广阔的前景.实验通过对胰腺癌细胞株Aspc-1进行抗EGFR抗体的重组腺相关病毒(rAAV-anti EGFR)治疗及联合放疗、吉西他滨(简称化疗)等综合治疗手段,探索rAAV介导抗EGFR单链抗体对胰腺癌治疗的效果.方法 分别通过单纯化疗、单纯放疗、rAAV-anti EGFR治疗,rAAV-anti EGFR治疗联合化疗、rAAV-anti EGFR治疗联合放疗、rAAV-anti EGFR治疗联合放化疗干预胰腺癌细胞株Aspc-1及裸鼠移植瘤,检测细胞或移植瘤的凋亡率以及移植瘤生长情况.结果 体外实验提示,以上处理方式使肿瘤细胞凋亡率显著高于对照组(P＜0.05),rAAV-anti EGFR治疗联合放化疗细胞凋亡率要高于rAAV-anti EGFR治疗、单纯放疗或单纯化疗(P＜0.05).体内实验提示,rAAV-anti EGFR治疗后,肿瘤生长明显受到抑制(P＜0.05),且与放疗和化疗均有协同作用;rAAV-anti EGFR治疗后,组织中凋亡相关Caspase-3活性蛋白表达细胞数要显著高于对照组(P＜0.05),rAAV-anti EGFR治疗联合放疗或化疗其凋亡蛋白表达细胞数要多于单纯治疗组(P＜0.05).结论 rAAV-anti EGFR治疗在体内外均有良好的抗胰腺癌效应,其联合放化疗疗效优于单纯放疗或单纯化疗,且该病毒载体与化疗及放疗具有协同作用.     

分化抑制因子2和表皮生长因子受体及人类表皮生长因子受体2在结直肠癌组织中的表达及其意义

目的 研究分化抑制因子2(Id2)、表皮生长因子受体(EGFR)及人类表皮生长因子受体2(Her-2)在结直肠癌中的表达以及与患者预后的关系.方法 采用PV6000二步法检测359例结直肠癌及35例癌旁正常组织中Id2、EGFR及Her-2的表达.结果 (1)结直肠癌组织中Id2的阳性率为68.0%,EGFR的阳性率为64.9%,二者在结直肠癌组织中的表达均显著高于癌旁正常组织中的表达(P值均＜0.05).Her-2在结直肠癌组织中的阳性率为1.7%,与癌旁正常组织中的阳性率相比差异无统计学意义(P=0.441).(2)Id2的阳性表达与患者的TNM分期、组织学分级、肿瘤组织的肠壁浸润深度、淋巴结转移情况以及腹腔和远处转移情况等相关(P值均＜0.05).(3)Id2阳性表达组的无瘤生存时间较阴性表达组短(P=0.002),阳性表达组的5年生存率低于阴性组(P=0.001).结论 Id2可能在结直肠癌的发生、发展及转移中发挥重要作用,可以作为评价结直肠肿瘤生物学行为及判断预后的指标之一.     

RECK基因在胰腺癌中的表达及其与预后的关系

目的 观察人胰腺癌组织及细胞株中RECK基因的表达,探讨重组慢病毒LV-RECK对胰腺癌动物模型的治疗效果以及该基因与胰腺癌预后的关系.方法 免疫组化法检测42例胰腺癌及相应正常胰腺组织中RECK的表达,分析RECK表达与胰腺癌临床病理特征及预后的关系.采用Western Blotting法检测三个胰腺癌细胞株(PANC-1,MIAPaCa-2,AsPC-1)中RECK的表达.统计分析RECK基因表达与临床病理特征及预后的关系.建立胰腺癌动物模型,应用LV-RECK进行治疗,观察抑瘤效果,并进行生存分析.结果 RECK在胰腺癌细胞株中不表达.胰腺癌组织的RECK表达率(45.2％)较正常胰腺组织(88.1％)明显降低(P＜0.01).RECK表达与胰腺癌的TNM分期、淋巴结转移、局部浸润存在相关性(P＜0.05).Kaplan-Meier生存分析显示,RECK阳性表达组患者的生存期较阴性组明显延长(P=0.000).单因素Cox分析显示,RECK表达、TNM分期、淋巴结转移及局部浸润与预后有关(P＜0.05).多因素Cox分析显示,只有RECK表达具有独立的预后意义(P=0.000).动物实验中,LV-RECK治疗组移植瘤明显缩小(P＜0.05),微血管密度明显降低(P＜0.05),凋亡指数显著升高(P＜0.05),生存期显著延长(P＜0.05).结论 RECK表达与胰腺癌的侵袭转移及预后密切相关,可作为胰腺癌的独立预后指标.RECK基因过表达可以抑制肿瘤血管新生,诱导肿瘤细胞凋亡,从而抑制移植瘤的生长,改善荷瘤鼠的预后,为胰腺癌治疗提供了一个新的途径.     

表皮生长因子受体在膀胱癌非肿瘤黏膜中的表达及意义

目的探讨膀胱癌非肿瘤黏膜表皮生长因子受体(EGFR)表达与膀胱癌预后的关系.方法1998-2004年原发性膀胱癌患者非肿瘤黏膜组织标本64例,标本均为距癌组织至少3 cm以上病理证实为正常膀胱黏膜;另6例正常膀胱黏膜均取自良性前列腺增生手术患者.采用S-P免疫组化染色,对检测结果进行统计学分析处理(χ2检验).结果随膀胱肿瘤病理分级增加,EGFR表达阳性表达率增高,Ⅲ级明显高于Ⅰ级和Ⅱ级(χ2=6.22,P＜0.05);EGFR表达随肿瘤临床分期的增加阳性表达率也增高,但差异无统计学意义(χ2=2.08,P＞0.05);复发性肿瘤EGFR阳性表达率明显高于未复发者,差异有统计学意义(χ2=4.95,P＜0.05).结论膀胱癌患者非肿瘤黏膜EG-FR表达较正常黏膜明显增强.EGFR在膀胱黏膜的异常表达可能早于癌细胞的出现,EGFR在膀胱肿瘤的发生、发展起着重要作用,可作为早期判断预后因子.     

乳腺癌X线征象与血管内皮生长因子C和雌激素受体表达的关系

目的 探讨乳腺癌X线表现与血管内皮生长因子C(VEGF-C)、雌激素受体(ER)表达的关系.方法 75例经手术病理证实乳腺癌标本运用免疫组织化学方法检测VEGF-C、ER表达情况,分析其与术前钼靶X线征象的关系.结果 VEGF-C与X线上肿瘤的大小、钙化、血管增粗有关(P＜0.05),与肿瘤毛刺征、皮肤增厚、乳头内陷等征象无明显相关(P＞0.05).ER与肿瘤的毛刺征相关(P＜0.05),与肿瘤的大小、毛刺征、血管增粗、皮肤增厚、乳头内陷等征象无相关性(P＞0.05).ER呈阳性乳腺癌组织中VEGF-C表达较阴性组表达低,但两者差异无统计学意义(P＞0.05).结论 乳腺癌钼靶X线部分征象与VEGF-C和ER表达密切相关,通过部分征象,可推测乳腺癌的生物学行为,为临床上早期诊断、判断预后提供依据.     

血管内皮生长因子在胰腺癌中的表达及其临床意义

目的探讨血管内皮生长因子(VEGF)表达与人胰腺癌的血管生成及其生物学特性的关系.方法应用免疫组织化学方法测定了55例人胰腺癌组织中VEGF的蛋白表达和微血管密度(MVD),与临床病理学特征对照分析.结果胰腺癌的微血管密度平均为54.8±18.6;VEGF表达阳性率70.9%,在低分化、有淋巴结转移和Ⅱ-Ⅳ期的病人,VEGF阳性表达率显著高于中、高分化,无淋巴结转移和Ⅰ期的病人(P＜0.05).随访结果证明,VEGF高表达病人术后生存时间比VEGF低表达病人明显缩短(P＜0.01).结论VEGF表达水平能反映胰腺癌细胞的恶性程度,可作为胰腺癌分化、转移与预后分析的指标.     

表皮生长因子受体和环氧化酶-2在前列腺癌中的共同表达和意义

目的:探讨表皮生长因子受体(Epidermal growth factor receptor,EGFR)和环氧化酶-2(Cyclooxyge-nase-2,COX-2)在前列腺癌(Prostate cancer,PCa)中的共同表达和临床意义.方法:采用免疫组织化学法(SP)测定48例PCa中EGFR和COX-2阳性表达情况,按免疫组织化学结果分为EGFR(-)COX-2(-)、EGFR(-)COX-2( )、EGFR( )COX-2(-)和EGFR( )COX-2( )四组,分析它们表达与临床病理和预后的关系.结果:EGFR、COX-2阳性在PCa中为34例(70.8%)、21例(45.8%),两者的表达在PCa中无相关性(r＝0.04,P＝0.80),EGFR和COX-2共同表达有16例(33.3%),和Gleason评分、PSA水平有关(P<0.05),5年复发率83.1%,显著高于EGFR( )COX-2(-)(27.8%)、EGFR(-)COX 2( )(16.7%)和EGFR(-)COX-2(-)(12.5%)(P<0.05);13例转移PCa中有10例为EGFR( )COX-2( )(62.5%),显著高于其他三组(P<0.05).结论:EGFR和COX-2在PCa中表达无相关性,但其共同表达可以作为判断PCa预后的重要标志.     

表皮生长因子受体在前列腺癌雄激素非依赖型细胞系中表达的意义

目的探讨转化生长因子(TGF)-α和表皮生长因子(EGF)对前列腺癌雄激素非依赖型细胞系中表皮生长因子受体(EGFR)表达的调控作用.方法采用逆转录-多聚酶链式反应和免疫印迹法分别对TGF-α和EGF刺激前列腺癌雄激素非依赖型细胞系PC3、ARCaP后EGFR mRNA表达及其蛋白水平进行定量分析.结果EGF引起PC3、ARCaP的EGFR mRNA升高,分别为5.01±0.45和2.41±0.26,差异无显著性(P＞0.05);TGF-α引起各细胞系EGFR mRNA升高,分别为9.05±0.63和3.54±0.33,差异无显著性(P＞0.05).各细胞系EGFR蛋白水平TGF-α组明显高于EGF组(P＜0.05).结论TGF/EGF-EGFR通路在发生发展中起重要作用;TGFα-EGFR自分泌环在非依赖型前列腺癌中的作用强于EGF-EGFR自分泌环.     

Epidermal growth factor receptor and transformation

The action of transforming growth factor peptides is mediated by distinct membrane receptors, which in turn activate a postreceptor signaling mechanism, eventually resulting in a mitogenic response. Such a signaling pathway may be modified by oncogene expression at the receptor or postreceptor levels, as well as by alterations in the levels of expression of the growth factor itself. One of the most extensively studied group of receptors is the type I epidermal growth factor receptor family. Activation of this receptor triggers the induction of receptor dimerization, which enables cross-phosphorylation to occur between two receptor molecules. This dimerization model provides a universal mechanism to activate the type I receptor family for growth factors and subsequent transformation. Received: May 17, 2001 / Accepted: January 8, 2002     

Epidermal growth factor receptor in human glioma

Distribution of the epidermal growth factor (EGF) receptor in the surgical specimen of the human glioma was studied by immunohistochemical techniques using a monoclonal anti-EGF receptor antibody. Of 11 gliomas examined, EGF receptors were detected in nine glioblastomas and in one fibrillary astrocytoma. In the majority of cells, staining was observed over the cell membrane. Nuclear and cytoplasmic staining was also seen. In four glioblastomas, EGF receptor-positive cells were diffusely distributed in the tumor tissue. In one glioblastoma and one fibrillary astrocytoma, only a few positive cells were observed. These results imply the possible role of EGF receptors in the cellular proliferation of the human glioma.     

Comparative study on estrogen receptor, epidermal growth factor and epidermal growth factor receptor using immunocytochemical and biochemical assays in breast cancer

Estrogen receptor (ER), epidermal growth factor (EGF) and epidermal growth factor receptor (EGFR) were examined by immunocytochemical and biochemical assays in 86 breast carcinomas. The following results were obtained. 1. ER was stained in cellular nuclei by immunocytochemical assay using anti-ER monoclonal antibody. ER positive stained tumor cells were distributed in the various patterns. 2. Immunocytochemical analysis of ER was evaluated with the percentage of ER positive cells and the staining intensity. ER values between immunocytochemical and biochemical assays accorded in 79 out of 86 cases (91.9%). Significant correlation was obtained in both assays (p less than 0.01). A high tendency of the percentage of ER positive cells was demonstrated in PgR positive cases. 3. EGFR was evaluated as positive in 12 out of 38 cases (31.6%) by immunocytochemical assay and in 13 out of 38 (34.4%) by biochemical competitive binding assay using 125I labeled EGF, respectively. A significant inverse relationship was obtained between ER and EGFR values (p less than 0.05). 4. EGF was evaluated as positive in 22 out of 38 cases by immunocytochemical assay. EGF expression was observed in all EGFR positive tumors. Compared with ER and EGF staining, the percentage of ER positive cells was higher in EGF negative tumors than in EGF positive ones (p less than 0.05).     

大鼠血清表皮生长因子和睾丸表皮生长因子受体与精子生成的相关性

目的　探讨血清表皮生长因子 ( EGF)和睾丸组织表皮生长因子受体 ( EGF-R)与大鼠精子生成的关系。　方法　 40只性成熟期雄性 SD大鼠 ,随机分为假手术组( SOG)、去颌下腺组 ( SG)、去颌下腺加腹腔注射 EGF I组 ( SG-EGF I)和 II组 ( SG-EGFII) ,每组 1 0只。SG-EGF I和 SG-EGF II分别腹腔内注射 EGF0 .2 5和 0 .50 μg·kg- 1·d- 1。大鼠常规喂养 48d,断头取血和睾丸。放射免疫法检测血清 EGF水平 ,病理检查睾丸生精功能和免疫组织化学检测睾丸组织 EGF-R的表达。　结果　大鼠血清 EGF水平SG-EGF I组明显下降 ( P<0 .0 5) ,SG组有非常显著下降 ( P<0 .0 1 ) ;睾丸生精功能中、重度障碍 ;间质细胞 EGF-R表达明显减少 ( P<0 .0 5)。补充不同剂量的 EGF对睾丸生精功能有不同影响。 SOG、SG-EGF I和 SG-EGF II大鼠睾丸生精细胞、支持细胞及间质细胞 EGF-R表达无显著性差异 ( P>0 .0 5)。　结论　EGF对精子发生具重要的调控作用 ,血清 EGF水平和睾丸间质细胞 EGF-R高表达与睾丸生精功能呈正相关     

The correlation between serum epidermal growth factor/testicular epidermal growth factor receptor and spermatogenesis in rat

<正>Objective: To investigate the correlation between epidermal growth factor (EGF)/testicular epidermal growth factor receptor (EGF-R) and spermatogenesis in rat. Methods: Forty mature male Spraque-Dauley (SD) rats were randomly assigned to four groups, ten rats in each: sham operation group (SOG), sialoadenectomy group(SG), sialoade-nectomy group with injection of EGF (0. 25 μg·kg-1·d-1, SG-EGF Ⅰ) and sialoadenectomy group with injection of EGF (0. 50 μg·kg-1·d-1 , SG-EGF Ⅱ). The rats were routinely feed, and blood and testes were obtained on the 48th day after the operation. Serum EGF concentrations were determined by radioimmunoassay (RIA) , expression of EGF-R in testes was examined by the immunohistochemical method, and the spermatogenesis was pathologically checked. Results: Serum EGF levels in SG-EGFIand SG decreased significantly when compared with those of SOG (P<0. 05 and P< 0. 01, respectively). The testicular function of spermatogenesis showed a moderate to severe impairment in SG. The expression of EGF-R in Leydig cells decreased in SG(P<0. 05). The two dosage groups of EGF replacement had different effects. There were no significant differences of EGF-R expression in testicular germ cells, Sertoli cells and Leydig cells in SOG, SG-EGFⅠand SG-EGFⅡ(P>0. 05). Conclusion: EGF may play an important role in the regulation of spermatogenesis. Serum EGF concentration and high expression of EGF-R in Leydig cells have a positive correlation with spermatogenic function of the testes.     

Epidermal growth factor receptor expression in colorectal cancer

Epidermal growth factor (EGF) receptor expression was estimated in 50 invasive human colorectal cancers using immunohistochemistry and the degree of expression was quantified from integrated optical density measurements on the stained sections. All tumours stained positively, but Dukes' C tumours exhibited significantly higher levels of receptor than either Dukes' A or B tumours. In addition, histologically high grade cancers expressed receptors more strongly than those of low grade. It is concluded that a high EGF receptor concentration is associated with poor prognostic factors in colorectal malignancy.     

Epidermal growth factor receptor on human thyroid neoplasms

Morphological observation of epidermal growth factor receptor (EGF-R) was attempted for human thyroid neoplasms, and the results were evaluated compared with the various histological types. Thirty-four malignant tumors, 24 benign tumors, 7 adenomatous goiters, and 7 normal thyroid tissues obtained at surgery were subjected to this study. They were fixed in 10% formalin solution, embedded in paraffin. After sectioning at 4 m, immunohistochemical staining by avidin-biotin-peroxidase complex technique was performed employing anti-human EGF-R monoclonal antibody. Both normal thyroid tissues and benign adenomas showed no apparent immunoreactive staining. The majority of the malignant tumors, however, demonstrated dark brown reaction products indicating location of EGF-R on the cell surface, cytoplasm, and nuclear envelope. Medullary and anaplastic carcinomas were stained more intensively than papillary and follicular carcinomas. In adenomatous goiter, the immunoreactive products were occasionally observed on the follicular cells of some limited areas, whereas its staining pattern was different from the malignant neoplasms. The correlative study between UICC classification of thyroid tumors and EGF-R staining in the papillary carcinoma revealed a higher frequency of positive staining in cases of multifocal metastasis.

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Resumen El factor de crecimiento epidermal (FCE) es un subgrupo de diversos polipéptidos de crecimiento involucrados en la regulación del crecimiento y diferenciación celulares. El FCE se liga a receptores específicos (FCE-R) de la membrana celular de sus órganos blanco (target organs); es considerado como un oncogen por su homología con el oncogen transformador v-erb B del virus de la eritroblastosis de las aves. Se ha demostrado la presencia de FCE-R en algunos tumores del esófago, estómago, seno, vejiga, pulmón, cerebro, ovario, y útero. La identificación del FCE-R es esencial en la yaloración del comportamiento biológico de los tumores sólidos. Este trabajo demuestra la reactividad de un anticuerpo monoclonal anti FCE-R con células de neoplasmas tiroideas así como la ubicación de FCE-R.El estudio tuvo como propósito la observación morfológica de FCE-R en neoplasmas tiroideos y su comparación con los diversos tipos histológicos.Treinta y cuatro tumores malignos, 24 tumores benignos, 7 bocios adenomatosos, y 7 tejidos normales obtenidos durante la cirugía fueron sometidos a estudio. Los especímenes fueron fijados en solutión de formol al 10% incluídos en parafina. Una vez seccionados a un espesor de 4m, se realizó la coloración inmunohistoquímica con la técnica del complejo de avidinabiotina-peroxidasa empleando un anticuerpo monoclonal murino contra FCE-R humano.Tanto los tejidos tiroideos normales como los adenomas benignos exhibieron ausencia de coloración inmunorreactiva. Sin embargo, la mayoría de los tumores malignos demostraron la presencia de productos con una reacción marrón oscura indicativa de la ubicación de FCE-R en la superficie celular, el citoplasma, y la envoltura nuclear. Los carcinomas medulares y anaplásicos aparecieron con coloraciones más intensas que los carcinomas papilares y foliculares. En el bocio adenomatoso los productos inmunorreactivos fueron ocasionalmente observados en las células foliculares de áreas limitadas, al tiempo que su patrón de coloración fue diferente del de los neoplasmas malignos.El estudio correlativo entre la clasificación de la UICC (Union International Contra el Cáncer) de los tumores tiroideos y la coloración de FCE-R en el carcinoma papilar demostró una mayor frecuencia de coloración positiva en casos con metastasis multifocales.De los resultados del estudio se puede concluír que: (a) el carcinoma tiroideo puede poseer mayor cantidad de FCE-R y mayor afinidad de ligazón que el tumor benigno, (b) la presencia de FCE-R puede correlacionarse con los diversos grados de malignidad en el carcinoma tiroideo, (c) el bocio adenomatoso puede poseer algún potencial de malignidad.

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Résumé Dans cette étude, on a mis en évidence le récepteur du facteur de croissance épithélial (R-FCE) dans les tumeurs de la thyroïde. Les caratéristiques immunohistologiques ont été étudiés dans les différentes variétés histologiques.On a donc étudié 34 tumeurs malignes, 24 tumeurs bénignes, 7 goitres adénomateux, et 7 pièces comportant du tissu normal, prélevés lors de la chirurgie de la thyroïde. Tous les tissus ont été fixés au formol à 10% et inclus dans de la paraffine. Après des coupes de 4m, on a effectué une coloration immunohistochimique par la technique du complexe avidine-biotineperoxydase en utilisant des anticorps R-FCE humains monoclonaux.La coloration des tissus normaux et des adénomes bénins était apparemment immunonégative. La plupart des tumeurs malignes cependant ont montré des substances marron foncé, indiquant la présence de R-FCE sur la surface cellulaire, dans le cytoplasme et sur la membrane du noyau. Les cancers anaplasiques et médullaires ont présenté une coloration plus intense que celle des cancers papillaires et folliculaires. Dans le goitre adénomateux, on a mis en évidence, par endoit, des substances immuno-réactives dans quelques cellules folliculaires, mais les résultats de coloration différait de ceux obtenus dans les tumeurs malignes.Une étude de corrélation entre la classification UICC des tumeurs thyroïdiennes et la coloration R-FCE des cancers papillaires, a démontré une fréquence accrue de coloration positive en cas de métastases multifocales.

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Presented at the International Association of Endocrine Surgeons in Sydney, Australia, September, 1987.