泪腺腺样囊性癌生物标志物的研究进展

泪腺腺样囊性癌是泪腺最常见的恶性上皮肿瘤,具有易复发、易转移及预后差的特点,目前临床治疗方式主要有手术切除、放疗、化疗等,但其生存率仍低。因此,进一步研究泪腺腺样囊性癌的发病机制和寻找泪腺腺样囊性癌的生物标志物尤为迫切。本文将对泪腺腺样囊性癌的生物标志物的研究进展作一综述。     

泪腺腺样囊性癌CT表现的研究

目的 分析泪腺腺样囊性癌常见的CT图像特征,从而探讨CT(computed tomography)影像对于泪腺腺样囊性癌的诊断价值.方法 病历来源为天津医科大学眼科中心及天津医科大学第二医院,经病理确诊的眼眶腺样囊腺癌39例.其中原发肿瘤20例,复发肿瘤19例,均为单眼发病,所有患者均行眼眶CT检查,获取水平及冠状扫描图像.结果 泪腺腺样囊性癌中原发肿瘤形状多为厚扁平状,贴附于眶壁增长,在体层像上呈锥形者10例、不规则形5例;复发肿瘤形状为不规则型8例、厚扁平状,贴附于眶外上壁向后增长者8例.原发与复发泪腺腺样囊腺癌的好发位置位于眶外上方分别为18例与11例.结论 CT可清晰显示肿瘤的位置,形状,范围、眶骨壁改变,对于泪腺腺样囊性癌的诊断和制定治疗方案具有重要指导意义.     

关注泪腺腺样囊性癌诊断和治疗中需要注意的问题

泪腺腺样囊性癌是泪腺最为常见的恶性肿瘤之一,具有较高的复发率和死亡率.此病发病机制不明,预后较差.目前,泪腺腺样囊性癌尚无标准化的诊疗方案,在临床诊疗过程中也存在着一些问题.为了提高有关泪腺腺样囊性癌的诊疗质量,本文将从泪腺腺样囊性癌的流行病学、临床表现、影像学检查方法 的选择、诊断与鉴别诊断、病理组织学改变和免疫组织化学指标、治疗方案的选择及预后等方面加以述评,以期有助于临床医师加强对该病的认识,提高早期诊断率,减少误诊率.     

神经细丝酸性蛋白在泪腺腺样囊性癌中的表达及意义

目的研究雪旺细胞标记物神经细丝酸性蛋白（GFAP）在腺样囊性癌有嗜神经性侵袭组与无嗜神经性侵袭组中的表达的差异，旨在进一步探明泪腺腺样囊性癌嗜神经性侵袭性生长的机制。方法应用免疫组化S—P法检测GFAP在28例腺样囊性癌中的表达情况。结果有嗜神经侵袭性生长组中的GFAP阳性表达率较无嗜神经侵袭性生长组呈升高趋势（P〈0．05）。结论泪腺腺样囊性癌的嗜神经性侵袭特性可能与肿瘤细胞中存在着雪旺细胞分化有关。     

泪腺腺样囊性癌

一、命名、发病率腺样囊性癌系起源于腺体组织,恶性度较高的肿瘤。通常发生在唾液腺、泪腺、也可在气管、乳腺、皮肤汗腺等处发生。眼眶部泪腺腺样囊性癌是泪腺最常见的恶性肿瘤。在泪腺癌中,腺样囊性癌的发病率是25％和35％。本病最初由Billroth在1859年命名为圆柱瘤,他描述此肿瘤原发于鼻窦,以后穿透到     

泪腺上皮性肿瘤彩色多普勒超声特征分析

目的 分析泪腺上皮性肿瘤的彩色多普勒超声声像特征,证实其临床应用价值.方法 对28例经病理证实为泪腺上皮性肿瘤的彩色多普勒超声声像图进行回顾性分析.结果 泪腺多形性腺瘤多表现为边界清楚,形态规则,均匀中等内回声或不均匀内回声,不可压缩,彩色多普勒血流分级为I～Ⅱ级;腺样囊性癌多表现为边界清楚,形态不规则,不均匀内回声,不可压缩,彩色多普勒血流分级为Ⅲ～Ⅵ级,其中原发性泪腺腺样囊性癌收缩期峰值血流速度明显升高,与原发性泪腺多形性腺瘤间差异有统计学意义(P<0.05 ).结论 彩色多普勒超声对泪腺上皮性肿瘤的诊断及区别泪腺肿瘤良、恶性有重要临床应用价值.     

动脉介入化学疗法在视网膜母细胞瘤和泪腺腺样囊性癌治疗中的应用

动脉介入化学疗法是20世纪90年代发展起来的一种局部化疗技术,主要用于恶性肿瘤的局部给药治疗.该技术可集中高剂量化疗药物进行局部治疗,且全身副作用小.目前已被应用于眼部肿瘤尤其是视网膜母细胞瘤及泪腺腺样囊性癌的治疗研究,并显示出较好的效果.本文主要论述动脉介入化学疗法在视网膜母细胞瘤及泪腺腺样囊性癌治疗方面的应用及进展...     

泪腺腺样囊性癌一例

泪腺腺样囊性癌一例广东省江门市中心医院眼科严鹏飞病理科陈满根腺样囊性癌系起源于腺体组织、恶性度较高及预后较差的肿瘤，较少见。多发生于大小涎腺，泪腺者罕见。我科于１９９２年５月８日收治了一例，报告如下：患者男，３８岁，因右眼视力下降，眼球向外上活动受限...     

爱先蓝和细胞角蛋白双重染色技术在泪腺腺样囊性癌诊断中的应用

目的:探讨爱先蓝(Alcian Blue,AB)和细胞角蛋白(cytokeratin,CK)双重染色技术在泪腺腺样囊性癌组织中的应用,提高泪腺腺样囊性癌染色效率.方法:选取中山大学中山眼科中心临床病理科2015年1月至2017年1月期间诊断为泪腺腺样囊性癌病例标本23例,在同一张切片上先进行AB染色,再进行CK染色,观察染色效果.结果:23例泪腺腺样囊性癌标本组织中黏液物质全部呈蓝色;癌细胞胞质CK阳性,呈棕黄色.结论:AB和CK双重染色方法稳定,颜色对比鲜明,能够良好显示癌细胞及黏液的关系,并且比分开的两次单种染色省时、经济.     

泪腺腺样囊性癌不同病理组织学分型和分级间骨质破坏、 神经侵犯和预后的差异

目的:研究泪腺腺样囊性癌不同病理组织学分型和分级间骨质破坏、神经侵犯和预后的差异.方法:回顾性分析2010年4月至2019年4月首都医科大学附属北京同仁医院眼肿瘤科收治并经病理组织学检测确诊的30例泪腺腺样囊性癌患者的完整病历资料.分析患者的一般病历资料、医学影像学资料、病理组织学检查结果以及预后情况等,并系统研究泪腺...     

Strabisme Alternant - Etude clinique - traitement

The author defines motor and sensory alternation: the term alternation should not be used in isolation, it should always be accompanied by the name of the parameter concerned. Sensory alternation is always found together with motor alternation but the reverse is not true.The examining criteria for a diagnosis of sensory alternation are given, sensory alternation must not be confused with alternating inhibition. Working from clinical observations of cases of motor alternating strabismus, the author selects 2 types of binocular sensory relations which allow one to differentiate between:- cases of primary alternating strabismus- cases of secondary alternating strabismusThese forms will develop in different ways; in both cases a cure is possible providing that the right treatment is prescribed and once prescribed carefully followed, etc. It is always a case of serious forms of strabismus whose developmental period is spread over several years.According to the authors, the frequency of cases of true primary strabismus is from 1–3%, the frequency of cases of secondary alternating strabismus varies according to the type of therapy practised on cases of monocular strabismus with amblyopia. These latter will become cases of alternating strabismus under the influence of certain types of therapy carried out over several years (penalization, rocking, alternated occlusion, etc...).Experimental data on kittens confirm clinical data; kittens placed in abnormal environments during the sensitive period will show modification in the distribution of cortical cells and the absence of binocular cells (either because the excitation of the two eyes was not simultaneous, or not identical: artificial strabismus, occlusion, opaque glasses). This disturbances become irreversible after a certain period of exposure (a function of age, length of exposure, etc...).It is thus necessary to bear in mind: 1) the iatrogenic risks of certain orthoptic treatments, 2) the necessity for a binocular form of treatment as soon as possible, as once a certain stage is passed, cortical plasticity diminishes and the elaboration of normal binocular relations becomes impossible.

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Effects of Adenosine Agonists on Intraocular Pressure and Aqueous Humor Dynamics in Cynomolgus Monkeys

The effects of single or multiple topical doses of the relatively selective A₁adenosine receptor agonists (R)-phenylisopropyladenosine (R-PIA) and N⁶-cyclohexyladenosine (CHA) on intraocular pressure (IOP), aqueous humor flow (AHF) and outflow facility were investigated in ocular normotensive cynomolgus monkeys. IOP and AHF were determined, under ketamine anesthesia, by Goldmann applanation tonometry and fluorophotometry, respectively. Total outflow facility was determined by anterior chamber perfusion under pentobarbital anesthesia. A single unilateral topical application of R-PIA (20–250 μg) or CHA (20–500 μg) produced ocular hypertension (maximum rise=4.9 or 3.5 mmHg) within 30 min, followed by ocular hypotension (maximum fall=2.1 or 3.6 mmHg) from 2–6 hr. The relatively selective adenosine A₂antagonist 3,7-dimethyl-1-propargylxanthine (DMPX, 320 μg) inhibited the early hypertension, without influencing the hypotension. Neither 100 μg R-PIA nor 500 μg CHA clearly altered AHF. Total outflow facility was increased by 71% 3 hr after 100 μg R-PIA. In conclusion, the early ocular hypertension produced by topical adenosine agonists in cynomolgus monkeys is associated with the activation of adenosine A₂receptors, while the subsequent hypotension appears to be mediated by adenosine A₁receptors and results primarily from increased outflow facility.