颅咽管瘤磁共振诊断价值

目的分析评价磁共振对颅咽管瘤的临床诊断价值。方法回顾性分析22例颅咽管瘤的MRI表现，并与病理比较。结果颅咽管瘤位于鞍上12例，鞍内2例，鞍上、鞍内联合受累8例；囊性肿瘤5例，囊实性13例，实性4例。肿瘤信号多不均匀，表现复杂。结论磁共振对颅咽管瘤有很好的诊断价值。     

颅咽管瘤35例CT分析

分析３５例经手术和病理证实的颅咽管瘤的ＣＴ表现，２１例呈低密度灶，４例呈等密度灶，６例呈高度灶，４例呈混杂密度灶，肿瘤多自鞍上区向上生长，突入第三脑室，２４例伴有钙化，钙化及环状强化为颅咽管瘤特征表现，并就颅咽管瘤的诊断及鉴别进行了讨论。     

颅咽管瘤的MRI诊断

目的分析颅咽管瘤的MR I表现,评价MR I对颅咽管瘤的诊断及鉴别诊断价值。方法回顾性分析24例经手术病理证实的颅咽管瘤的磁共振成像(MR I)表现,其中13例有CT对照。结果24例颅咽管瘤发生于鞍上12例,鞍内3例,鞍内鞍上8例,鼻咽部1例。囊性5例,囊实性16例,实性3例。囊性部分T1W I信号表现多样,可呈低、中、高信号,T2W I均为高信号,实性部分多表现为等T1长T2信号,Gd-DTPA增强扫描后,囊性部分的囊壁呈弧形或环形强化,而实性部分不均匀强化。结论MR I是诊断颅咽管瘤的有效方法,且具有很好的定位及定性诊断价值。     

颅咽管瘤的MRI诊断和鉴别诊断

目的 探讨颅咽管瘤的MRI特点.方法 回顾分析23例经手术病理证实的颅咽管瘤的MRI资料.结果 颅咽管瘤多位于鞍上,可分为3型:囊性、囊实性、实性.囊性部分T1W1信号表现多样,可呈低、中等、稍高信号,T2WI均为高信号,实性部分多表现为等T1长T2信号,强化后囊性病灶表现为环状薄壁强化,实质性病灶为均匀强化.结论 MRI是一种诊断颅咽管瘤有效的方法 ,但不典型者需与垂体瘤、鞍上脑膜瘤鉴别.     

颅咽管瘤的MRI及CT诊断

目的通过分析颅咽管瘤的MRI及CT表现,评价MRI及CT对颅咽管瘤的诊断及鉴别诊断价值。方法通过MRI和CT检查,分析12例经手术病理证实的颅咽管瘤的影像学表现。讨论颅咽管瘤的分型、诊断及鉴别诊断。结果12例颅咽管瘤中,位于鞍上6例,鞍内1例,鞍上鞍内5例。囊性3例,囊实性8例,实性1例。囊变部分T1WI可表现为低、中、高信号,T2WI均表现为高信号,CT表现为低、等密度;实性部分MRI多表现为等T1长T2信号,CT表现为等密度;Gd-DTPA增强扫描,囊壁呈环状明显强化,实性部分呈不均匀强化,CT增强扫描病灶的强化模式与MRI相同。结论MRI、CT是诊断颅咽管瘤的有效方法,MRI具有很好的定位、定量及定性诊断价值,CT具有定性及鉴别诊断价值。     

32例颅咽管瘤病理分型及其MRI影像学特征分析

目的 分析颅咽管瘤病理分型及MRI影像学特征。方法 回顾性分析本院2018年5月至2019年9月收治32例颅咽管瘤患者的临床资料。观察颅咽管瘤不同病理分型的MRI表现,分析颅咽管瘤不同病理分型的MRI信号特点;比较增强扫描后颅咽管瘤不同病理分型的MRI强化方式。结果 AD患者肿瘤多位于鞍下或鞍内无囊内结节,见包绕蛛网膜下腔的血管可见;以囊实混合性为主,多呈结节样强化,囊内结节未见强化。PC患者：肿瘤位置以鞍上常见,未见包绕蛛网膜下腔的血管,囊内结节可见强化。MIX患者多见于鞍上,可见囊内结节和包绕蛛网膜下腔的血管,以囊性较多见,以结节样强化为主。结论 MRI检查可有效显示不同组织类型颅咽管瘤的影像学特征,且各自具有不同的影像学征象,结合患者临床特点对于准确作出定位、定性诊断、评估患者预后有重要的临床价值。     

颅咽管瘤的影像学分析

目的:探讨颅咽管瘤的影像学表现及其诊断价值,提高影像诊断率。方法:利用CT和MRI检查方法,分析了10例经手术病理证实为颅咽管瘤的影像学表现,讨论了颅咽管瘤的病理及分型,临床及预后,CT和MRI对本病的诊断及鉴别诊断。结果:囊性者6例,CT为边界清低密度影,伴钙化,呈环形或岛状强化。实性者1例,为混杂密度影。囊实混合者3例。MRI见T₁WI成低、等或高信号。T₂WI呈混杂高信号。结论;CT及MRI对颅咽管瘤的定位诊断率达100%,定性诊断率89%。为临床准确提供手术方式。     

鞍区Rathke囊肿的MRI诊断及误诊分析

目的分析鞍区RaLhke囊肿的MRl表现,提高对该病的诊断水平。方法回顾性分析经手术与病理证实的24例Rathke囊肿的MRI资料,其中15例进行了动态增强扫描。结果裳肿位于鞍内1O例,鞍内向鞍上延伸14例,多呈圆形、卵圆形或哑铃形,10例正确诊断、11例误诊为垂体瘤,2例误诊为颅咽管瘤,1例误诊为蛛网膜囊肿。结论鞍区Rathke囊肿的MRI表现较典型的特点为：信号多雯,囊内有结节、壁无强化或线样强化,但部分不典型病例需密切结合临床病史与垂体瘤、颅咽管瘤鉴别。     

颅咽管瘤的MRI诊断

目的探讨颅咽管瘤的MRI特点,提高诊断水平。方法回顾性分析经病理证实的14例颅咽管瘤病例,所有患者均行MRI平扫及增强扫描,分析其MRI表现。结果 14例病灶中,8例位于鞍上,4例位于鞍内及鞍上,2例位于鞍旁;7例病灶呈分叶状,7例呈类圆形。病灶均为囊实性病灶,6例囊性部分呈T1WI低信号,5例为T1WI高信号,3例为T1WI等信号,T2WI均为高信号。实性部分在T2WI呈高信号或高低混杂信号,T1WI等信号（8例）或稍低信号（6例）。增强后病灶14例患者实性部分均见强化,其中11例为网格状强化,3例为均匀强化。结论颅咽管瘤具有一定的MRI特点,结合该特点有助于在术前正确诊断。     

颅咽管瘤35例CT诊断分析

分析３５例经手术和病理证实的颅咽管瘤的ＣＴ表现。２１例呈低密度灶，４例呈等密度灶，６例呈高密度灶，４例呈混杂密度灶。病灶多自鞍上区向周围延伸，最常累及三脑室，２４例伴有钙化者中，壳状钙化及鞍隔区域的钙化为其特征。     

Value of D-Dimers in patients with acute aortic dissection

Objective: To evaluatel the value of D-dimers in patients with acute aortic dissection (AAD). Methods: This study consisted of 16 patients with AAD and 27 non-AAD patients. Serum D-dimets were measured by Sta-Liatest D-DI immunoturbidimetric assay. Results: D-dimer level was higher (P ＜ 0.001) in patients with AAD(7.91 ± 5.52 μg/ml) than that in non- AAD group(1.57±1.24 μg/ml). D-dimer was positive (＞0.4 μg/ml) in all patients with AAD and in 10 control group patients (37%). Among patients with acute AAD, D-dimers tended to be higher in Stanford A than in Stanford B (8.67 ± 4.31 μg/ml vs. 3.24±1.27 μg/ml, P ＜0.01). D-dimer values tended to be higher in more extended disease(3.84 ± 1.65 μg/ml, 8.57 ± 3.58 μg/ml and 11.87 ± 5.69 μg/ml in thoracic aorta, thoracic and abdominal aorta, thoracic and abdominal aorta and iliacal arteries, respectively, P ＜ 0.05 for both 8.57 ± 3.58 and 11.87 ± 5.69 vs. 3.84 ± 1.65 ). Including the control group into the analysis, we found a sensitivity of 100%, a negative predictive value of 100%, and a specificity of 66% and a positive predictive value of 64% for D-dimer in diagnosis of AAD in our patients with suspected AAD. Conclusion: D-dimer was elevated in patients with AAD. A negative D-dimer test result could be useful in excluding AAD.     

Research of combined liver-kidney transplantation model in rats

Objective： To set up a simple and reliable rat model of combined liver-kidney transplantation. Methods： SD rats served as both donors and recipients. 4℃ sodium lactate Ringer＇s was infused from portal veins to donated livers,and from abdominal aorta to donated kidneys, respectively. Anastomosis of the portal vein and the inferior vena cava （IVC） inferior to the right kidney between the graft and the recipient was performed by a double cuff method, then the superior hepatic vena cava with suture. A patch of donated renal artery was anastomosed to the recipient abdominal aorta. The urethra and bile duct were reconstructed with a simple inside bracket. Results： Among 65 cases of combined liver-kidney transplantation, the success rate in the late 40 cases was 77.5%. The function of the grafted liver and kidney remained normal. Conclusion： This rat model of combined liver-kidney transplantation can be established in common laboratory conditions with high success rate and meet the needs of renal transplantation experiment.     

BLOOD PRESSURE CHANGE WITH AGE IN SALT-SENSITIVE TEENAGERS

Objective To observe blood pressure change with age in salt-sensitive teenagers whose salt sensitivity were determined by repeated testing.Methods Salt sensitivity was determined through intravenous infusion of normal saline combined with volume-depletion by oral diuretic furosemide in 55 teenagers. After five years, salt sensitivity was re-examined and subject blood pressure was followed up. Blood pressure changes in salt-sensitive teenagers were compared to that of non-salt sensitive teenagers over five years.Results After 5 years, the repetition rate of salt sensitivity determined by intravenous saline loading is 92.7%. In teenagers with salt sensitivity on the baseline, both the systolic blood pressure increments and increment rates were much higher than non-salt sensitive teenagers (12.7±12.1 mmHg vs. 2.8±5.2 mmHg, P＜ 0.01; 12.2%± 12.0% vs. 2.5% ±4.4%, P＜ 0.001,respectively). There was a similar trend for diastolic blood pressure (8.4 ± 6.4 mmHg vs. 3.7 ± 6.4 mmHg, P = 0.052; 13.2% ±10.6 % vs. 6.8%± 10.1%, P = 0.053, respectively).Conclusions Salt sensitivity determined by intravenous saline loading showed good reproducibility. Blood pressure increments with age were much higher in salt-sensitive teenagers than non-salt sensitive teenagers, especially in terms of systolic blood pressure.     

安心颗粒对急诊经皮冠状动脉介入术后生活质量影响的研究

目的：评价使用安心颗粒对急诊经皮冠状动脉介入术（PPCI）术后生活质量的影响.方法：将160例接受PPCI的急性ST段抬高型心肌梗死患者随机分为安心颗粒组（术前顿服安心颗粒8.8g,术后安心颗粒4.4 g/次,每日2次）和对照组（仅接受基础药物治疗）.所有患者均服用阿司匹林、氯吡格雷和阿托伐他汀.分别在入院时、出院前1d、出院后180 d时,应用心肌梗死多维度量表（MIDAS）、中文版SF-36评价量表对患者生活质量评分.并观察术后30 d以内的出血并发症、血小板减少症发生情况.结果：入院时和出院前1d,两组患者的心肌梗死MIDAS、SF-36量表评分比较无差异（P＞0.05）;出院后180 d时,与对照组比较,安心颗粒组MIDAS、SF-36评分明显减低（P＜0.05）;组内与入院时比较,两组出院前1d、出院后180 d时,MIDAS、SF-36评分均降低（P＜0.05）.两组患者在随访期间均无大量出血、少量出血、重度和极重度血小板减少症发生,安心颗粒组有4例、对照组有7例发生不明显出血（P＞0.05）.两组发生轻度血小板减少症的患者数比较无差异（P＞0.05）.结论：PPCI使用安心颗粒,能改善急性ST段抬高型心肌梗死患者的生活质量,且不增加出血风险.     

The comparative studies of the influences of Urapidil and Nicardipine on sino-atrial node function, atrio-ventricular node function and hemodynamics

Objective:To investigate the influences of urapidil and nicardipine on rabbit sinus function,atrio-ventricular node function and hemodynamics.Methods:Thirty-two Angora's rabbits were selected and randomly divided into four groups.U1 group:urapidil 0.25 mg/kg;U2 group:urapidil 0.5 mg/kg;N1 group:nicardipine 10 μg/kg;N2 group:nicardipine 20 μg/kg.All these medicine were administrated within 30 seconds.Measurements were taken before and after the administration of urapidil or nicardipine for the following data:mean blood pressure(MAP),heart rate(HR),sino-atrial conduction time(SACT),maximal sinoatrial recovery time(SNRTmax)corrected sinus node recovery time(CSNRT),index of sinus node recovery time(SNRTI),Wenckebach A-V conduction frequency (WB),and P-R interval.Results:Significant MAP and HR changes were identified in all of the four groups before and after administration of both urapidil and nicardipine.No significant changes could be found in the rest of the parameters.Intergroup analysis showed that SACT and CSNRT of N1 and N2 groups were shorter than those of the U2 group(P＜0.01);the MAP decreased(P＜0.01)and the HR increased drastically(P＜0.01).Conclusions:Neither urapidil(0.25 mg/kg,0.5 mg/kg)nor nicardipine(10μg/kg,20μg/kg)has any significant influence on rabbit sinus function or rabbit atrio-ventricular node function.Nicardipine could be a better choice than urapidil for parafunctional sinus node patients.     

Expression of OPGmRNA and ODFmRNA in the patients of hip fracture due to osteoporosis

Objective：To investigate the gene expression of osteoprotegerin（OPG） and osteoclast differentiation factor（ODF） in the bone tissue of patients with hip fracture due to osteoporosis. Methods：OPGmRNA and ODFmRNA in the bone tissue in 50 cases of osteoporosis sufferers（over 50 years old） with hip fracture（Observer Group） and 30 cases of hip facture sufferers with no osteoporosis（Control group） were analyzed with the Semi-Quantitative RT-PCR method. Results：The mRNA expressed of ODF, OPG were both high in the patients with hip fracture. In the control group, the expression of OPG mRNA was observed, while the expression of ODF mRNA was very slight. Conclusion：Aged patients contained all signals including OPG, ODF that are essential for inducing osteoclastogenesis and promoting bone resorption.     

The clinicopathological and immuohistochemical analysis of solid-pseudopapillary tumor of the pancreas： report of 9 cases

Objective：To investigate the clinical features, pathological characteristics and immunophenotype of solid-pseudopapillary tumor of the pancreas（SPTP）. Methods：Nine surgically treated cases of SPTP were retrospectively reviewed. Hematoxylin and Eosin（HE） staining and immunohistochemical staining were used to analyze all cases, and the general clinical data was collected. Results：Six patients were asymptomatic except for a palpable mass. Two patients complained of vague-epigastric pain. One patient appeared jaundice. The tumor was encapsulated and solid tissues alternately with cystic tissues. Histologically, the histological structure of solid portion was pseudopapillary with a fibrovascular core. Tumor cells were uniform and medium-sized which were arranged in sheets ets or nests or pseudopapillary patterns. Immunohistochemical studies demonstrated that SPTP proved positive in vimentin（9/9 cases）, AAT（9/9 cases）, NSE（9/9 cases）, ACT（7/9 cases）, CK20（2/9 cases）, CgA（1/9 cases）, S-100（3/gcases）, PR（4/gcases）, Syn（3/9 cases） and CD56（5/9cases）, negative in CEA and ER. Conclusion：SPTP is a tumor predominantly occurring in young women frequently without special symptoms. This tumor has various characteristical histological patterns with different immunophenotype.     

Dynamic Changes in Serum Estradiol and Progesterone levels in Patients of Premenstrual Syndrome with Adverse Flow of Liver-qi

Objective:To probe into the influence of changes of ovarian hormones on the pathogenesis of the specific sub-type premenstrual syndrome(PMS)and reveal partial microcosmic mechanisms of adverse flow of liver-qi.Methods:Estradiol(E2)and progesterone(P)levels in serum were determined at different phases of menstrual cycle by radioimmunoassay.Results:In the group of PMS with adverse flow of liver-qi.the secretive peak value Of E2 and P at the follicular phase significantly decreased,and the secretive peak value at the luteal phase did not come into being.Conclusions:Low E2 and P secretive peak at the follicular phase and absence of secretive peak at the luteal phase is one of the microcosmic mechanisms of PMS with adverse flow of liver-qi.One of the pathophysiologic mechanisms of specific sub-type PMS is probably the continuous low level of E2and P.     

Real-time Three-dimensional Echocardiography in Assessment of Left Ventricular and Right Ventricular Volumes

Real-time three-dimensional echocardiography (RT3DE)is a new ultrasound technique that enables dynamic threedimensional visualization and quantification of the heart in real time. Investigation of feasibility and methodology of RT3DE in determining left ventricular (LV) and right ventricular (RV) volumes, RT3DE was performed in 35 normal adults using Philips SONOS 7500 system with a 2-4 MHz matrix array transducer. The 60°×60° "pyramid" volume database was obtained and analyzed on a TomTec echo workstation. Both LV and RV volumes were calculated with four 3DE methods (i.e. apical 2, 4, 8, and 16-plane) through manually tracing ventricular endocardial borders in end diastole and end systole. Stroke volumes were then calculated. LV volume was also measured by 2DE Simpson's rule using GE VIVID 7 ultrasound machine.     

SCREENING FOR A 21-CHROMOSOME ABNORMALITY IN PREIMPLANTED EMBRYOS OF ELDERLY WOMEN

Increasing maternal age is the only etiological factor unequivocally linked to Down's syndrome in humans. The occurrence rate of newborns with Down's syndrome is about 1/220 in women over 35 years old. However, the occurrence rate in embryos fertilized in vitro, of the elder woman is unclear. Using FISH we screened the number of chromosome 21 in preimplanted embryos of 5 elderly women (average age, 38.4 years) to study the feasibility and necessity of screening trisomy 21 in embryos in patients over 35 years old at the in vitro fertilization (IVF) center.