Fine-needle aspiration cytology of mammary fibroadenoma: a comparison of ThinPrep® and cytospin preparations

Mammary fibroadenoma (FA) is a lesion frequently sampled and diagnosed by fine‐needle aspiration (FNA). Accurate cytologic diagnosis of this common benign lesion is important as this can lead to non‐surgical, conservative management when breast imaging and clinical examination are concordant. In most instances, a confident diagnosis of FA is possible because of a characteristic cytologic appearance that includes hypercellularity, large epithelial cell groups, staghorn epithelial configurations, stromal fragments, and numerous background stripped nuclei. 1 , 2 Nevertheless, FAs can be diagnostically challenging because of shared cytomorphologic features with other benign lesions and low‐grade carcinoma. As such, FA is a well‐recognized source of false results on FNA cytology. 2 - 10 Furthermore, there are reports that newer thin layer cytopreparatory techniques, including the ThinPrep® (TP) system (Hologic Corp., Bedford, MA), alter the appearance of FA on FNA compared to conventional preparations and may compromise accurate cytologic diagnosis. 11 - 13 Diagn. Cytopathol. 2011;39:181–187. © 2010 Wiley‐Liss, Inc.     

Left main renal artery entrapment by diaphragmatic crura: spiral CT angiography

Entrapment of renal artery by the diaphragmatic crus is a rare cause of renal artery stenosis. Spiral computed tomography angiography provides a definitive diagnosis and shows the precise relationship of the artery to the diaphragmatic crus. The authors present a case of hypertension developing in a young 20-year-old female due to entrapment of the left renal artery by the diaphragmatic crus. This condition should be considered in young hypertensive patients with renal artery stenosis without cardiovascular risk factors.     

头颈部放疗患者涎液表皮生长因子水平降低的研究

本文主要目的是测量头颈部放疗者的涎液表皮生长因子(epidermal growth factor,EGF)水平,并评价EGF与放疗性口腔粘膜炎严重程度是否相关。 材料和方法 将13例头颈部放疗患者和18例与之性别、年龄相当的健康人进行配对研究。在放疗前、中、后分别收集全涎液,测定涎液全蛋白(totalprotein,TP)和EGF浓度,并记录口腔粘膜炎严重程度。 结果和讨论 放疗前涎液EGF和标准化EGF水平及TP水平在放疗组和健康组间的差异不明显。     

从兔股骨头中提取总RNA的方法特点

目的:建立一种高效、快速的骨组织总RNA提取方法。方法:实验于2005-01/2006-01在昆明医学院实验动物中心和中国科学院昆明动物研究所中科院细胞与分子进化重点实验室完成。取健康新西兰大白兔1只,截取其股骨头,迅速置于液氮罐中保存,于研钵中研磨,使骨组织始终保存于液氮中,继续研磨,如此重复3次,然后利用Trizol使骨细胞结构迅速破坏,将粉末转入离心管,室温静置5min。随后加入氯仿等有机溶剂处理、离心,使RNA与细胞DNA、蛋白质及其他成分分离从而得到总RNA。最后鉴定RNA的质量、纯度及产率,取2μL提取出的RNA在体积分数为0.008的甲醛变性琼脂糖凝胶上进行电泳,主要观察RNA的28S、18S及5S三个条带是否清晰,有无降解和DNA污染。以99μLDEPC水稀释1μLRNA样品,紫外分光光度计测量其吸光度(A)值,A260/A280之比值表示RNA的纯度,同时根据吸光度值计算其质量浓度。结果:①对提取的兔股骨头RNA进行琼脂糖凝胶电泳,可显示清晰的28S、18S两个条带,5S条带亦可见,表明了RNA是完整的。②用紫外分光光度法测定兔股骨头中提取出的RNAA260/A280,结果表明由本法提取的RNA纯度高,无DNA和蛋白质的污染。③经紫外分光光度计吸收定量,每毫克兔股骨头组织能提取1.0～1.2μg的总RNA。结论:本法提取骨组织总RNA方便、快捷,质量高,可用于骨组织的分子生物学研究。     

HPLC-MAXPLOT UV检测法测定血清中丹那唑及其代谢产物

本文建立了同时测定人体血清中丹那唑(Ⅰ)及其主要代谢产物2-羟甲基妊娠素(Ⅱ)和其它代谢产物妊娠素(Ⅲ)的高效液相色谱法。方法用YWG C18柱并以甲醇—水(74:26)作为流动相,应用紫外最大吸收作图法(maxplot)检测技术,以UV 285,240nm分别测定Ⅰ,Ⅱ和Ⅲ。使原型药和代谢产物都达到较高检测灵敏度。同时对方法的专一性、准确性和精密度等方面进行了评价,并应用于临床监测。     

Incidence of hysterectomy in New Zealand

The total number of hysterectomies performed in New Zealand from 1978 to 1984 was analysed with respect to age, public or private sector and hospital board area. The crude hysterectomy rate in 1984 was 4.1 per 10(3) female population. In this year 42% of hysterectomies performed were in the private sector. Rates varied between the different hospital board areas from 1.5 to 7.1 per 10(3) female population. Assuming surgical rates remain constant, a New Zealand female has a 39% chance of undergoing hysterectomy by the age of 85. A review of available world literature shows New Zealand to have a high hysterectomy rate second only to North America.