瘤的

Methods 50 SD rats of C6 brain glioma into the caudate nucleus by stereotactic methods were established.

目的 建立稳定可靠的大鼠C6脑神经胶质瘤模型，并运用1.5 T MRI观察脑胶质瘤瘤体生长的变化规律，为进行脑胶质瘤的在体实验研究提供基础。

The pathology, clinical manifestations, X-ray findings and treatment principles of benign bone tumors, osteochondroma, chondroma and giant cell tumor of bone .

良性骨肿瘤：骨软骨瘤，软骨瘤，骨巨细胞瘤的病理，临床表现，X线表现及治疗原则。

Our findings demonstrate that in conjunction with clinical and radiographic findings, immunohistochemical evaluation with a panel of D2-40, EMA, brachyury, and GFAP is most useful in distinguishing chordoid meningioma from chordoid glioma, skeletal myxoid chondrosarcoma, extraskeletal myxoid chondrosarcoma, chordoma, low-grade chondrosarcoma, and enchondroma. A lack of strong, diffuse S100 reactivity may also be useful in excluding chordoid meningioma.

我们的结果表明，结合临床和影像学资料，D2-40、EMA、brachyury和GFAP这样一个免疫标记组合就能很好地鉴别脊索样脑膜瘤和脊索样胶质瘤、骨的黏液样软骨肉瘤、骨外的黏液样软骨肉瘤、脊索瘤、低级别软骨肉瘤、内生性软骨瘤。S100染色不强烈、不弥漫也有助于排除脊索样脑膜瘤的诊断。

RESULTS: The imaging features of CBT were masses located at the bifurcation of the carotid artery, with abundant blood supply in the tumor, the internal and external carotid arteries shifted, the bifurcation of the carotid artery increased like goldcup in DSA. The imaging features of the neurilemmoma were masses located behind the bifurcation of the carotid artery, and the carotid bifurcation was normal, no blood supply in the tumor, but carotid arteries shifted.

结果：颈动脉体瘤的CDFI和DSA特征为：颈总动脉分权处单发性肿块，并与其紧密相连，瘤体内血流极为丰富，瘤体使颈外动脉向前内移位、颈内动脉向后外移位，颈内、外动脉分权角度增大明显，DSA呈高脚杯状改变；神经鞘瘤紧邻颈动脉，颈总动脉分权处角度无改变，瘤体内血流信号不丰富，瘤体使颈动脉向前、外移位。

objective to evaluate the role of mr perfusion weighted imaging in preoperation diagnosis of meningiomas.methods mr perfusion weighted images was performed in 47 patients with meningiomas followed by conventional imaging.results the mean rcbv values of angioblastic was the highest in the parenchyma of tumor.the mean rcbv values of malignant group was the lowest.the biggest mean rcbv values among different type meningiomas was statistically significant.the biggest mean rcbv values between benign and malignant group meningiomas was statistically significant,but not in the peri-tumor edema.conclusion the rcbv values were useful in the preoperative differentiation diagnosis of different types of meningiomas.those in the peri-tumor edema were useless in the preoperative differentiation diagnosis of different types of meningiomas.

目的 探讨磁共振灌注成像技术对脑膜瘤术前分型及良恶性鉴别的临床应用价值。方法对47例脑膜瘤病人行mr灌注成像检查，对5种亚型的良性脑膜瘤的mr灌注成像进行分析，并与非典型性及恶性脑膜瘤进行比较。结果血管瘤型脑膜瘤实质部分的rcbv值均数最高，恶性组脑膜瘤的rcbv值均数最低。各亚型间瘤体实质最大rcbv值均数间差异有统计学意义(p＜0.05)，良恶性脑膜瘤实质部分最大rcbv值均数间差异有统计学意义(p＜0.05)。瘤周水肿区的rcbv值均数间差异无统计学意义(p＞0.05)。结论 rcbv值对脑膜瘤术前分型及良恶性鉴别有所帮助，而瘤周水肿区的rcbv值对脑膜瘤分型及良恶性鉴别未显示临床实用价值。

Tanycytic ependymoma is a rare subtype of ependymoma. The differential diagnosis with schwannoma and astrocytoma should be considered.

伸长细胞型室管膜瘤是室管膜瘤的一种罕见亚型，病理诊断时尤其应注意与椎管内的神经鞘瘤和星形细胞瘤鉴别。

Finally,Tumorigenecity of KB-Neo,KB-PF4 and KBp17-70 cells wasassayed with xenograft tumor growth in isogenous nude mice by examiningthe growth speed of xenograft,survival span,and histochemistry ofxenograft nude mice.

最后，对重组的PF4和p17-70基因进行体内实验，建立裸鼠移植瘤模型，观察移植瘤的生长速度、移植瘤的体积、荷瘤鼠的生存时间、移植瘤瘤体组织中的血管密度。

The positve rates in serous carcinomas and borderline tumors were 39.3% and 55.6%, significantly lower than that in benign tumors and normal ovaries (P.05), but the statistical differences were not found between borderline tumors and serous carcinomas, benign tumors and normal ovaries.2 WWOX mRNA and protein expression in ovarin seruous tumors2.1 WWOX mRNA expression in ovarin seruous tumors The result of RT-PCR showed that WWOX mRNA expression were detected in 29 of 32 ovarian serous benign tumors, 12 of 16 ovarian serous borderline tumors, and 21 of 45 ovarian serous carcinomas respectively.

阳性条带密度扫描定量结果，卵巢浆液性癌中PTEN蛋白表达相对量为0.34±0.12比正常卵巢和浆液性囊腺瘤和交界性囊腺瘤明显降低(p.05)，其余各组间无统计学差异。3.2.2 PTEN蛋白FCM检测结果FCM结果，卵巢浆液性癌PTEN蛋白表达的FI值(0.908±0.023)明显低于正常卵巢、卵巢囊腺瘤和交界性囊腺瘤的FI值，差异有统计学意义(P.05)。3.2.3 PTEN蛋白免疫组织化学结果35例浆液性囊腺瘤、18例交界性囊腺瘤和56例浆液性癌中，分别有31例、15例和29例呈阳性表达。

According to the composition of adenoma or morphological characteristics can be divided into cystadenoma adenoma, fibroadenoma, pleomorphic adenoma and polypoid adenoma type.

根据腺瘤的组成成分或形态特点，可将腺瘤分为囊腺瘤、纤维腺瘤、多形性腺瘤和息肉状腺瘤等类型。

Neural stem cells have a strong self-renew mechanism and it can transform after a little break. Neural stem cells have a long term survival, which mean that it has more probability of wrong copy than mature cells. These cells are formed glioma stem cells in the end. The genes who adjust neural stem cells can express in glioma stem cells, which hold out glioma stem cells from neural stem cells. There is another presume that glioma stem cells come from differentiated cells. Through the gene break of these cells, they can obtain characteristics of stem cells, then form glioma stem cells.

神经干细胞具有很强的自我更新机制，获得较少突变即有可能恶性转化，而且干细胞存活时间较长，这意味着干细胞比成熟细胞发生细胞复制的错误几率更大，因外界环境的刺激而发生突变的机会更多，最终形成脑胶质瘤干细胞，同时调节神经干细胞增殖和自我更新的基因在脑胶质瘤的脑胶质瘤干细胞中也表达，这也是支持神经干细胞是脑胶质瘤干细胞来源的；也有推测认为它可能起源于已分化的细胞，由这些细胞突变发生去分化得来，并通过基因突变而获得了干细胞自我更新的特性，从而形成脑胶质瘤干细胞。

By using competitive adsorption of activated carbom to remove unfavorable influence of carbon in carbonaceous gold concentrate on leaching process, the leaching rate of gold concentrate can be improved to 88% as compared with 10%by direct cyanidation.

本文论述了利用活性炭竞争吸附作用，消除含炭金精矿中炭在浸出过程中的影响，使金精矿的浸出率可由直接氰化的10％提高到88％。

The only thing you're ever gonna be king of is King of the Stupids!

你只配做傻瓜的国王！