Malignant bowel obstruction (MBO) is common in patients with bowel or gynaecological canc-er. Although surgery is the primary treatment for most patients with MBO, it should not be undertaken rou-finely in patients with poor prognosis. Nasogastric drainage is only a temporary measure. Serf-expanding me-tallic stents are optimistic in malignant obstruction of the gastric outlet and proximal small bowel.

Gastrointestinal stromal tumours(GISTs)are the most common primary mesenchymal tumours of the gastrointestinal tract and the disease is occasional and asymptomatic. Though the high rate of recur- rence after surgery, operation remains the firstline treatment of the GIST without metabasis. With the consid- eration the molecular biology of tumor, the treatment including surgery and molecular targeted therapy can im- prove the prognosis of GISTs.

Objective To assess the impact of different number of diffusion gradient directions (NDGD) of diffusion tensor imaging (DTI) on dispersion degree of fractional anisotropy (FA) values and signal-to-noise ratio (SNR) for adult brain tissues. Methods Eight healthy volunteers underwent DTI with 7 NDGD respectively, and the associated FA maps were obtained. Four region of interest (ROI) (genu and splenial of corpus callosum, genu and posterior limb of internal capsule) were chosen in white matter of FA maps, FA values and the corresponding SNRs of the ROIs were computed and analyzed with NDGD increasing. Results FA values within all ROIs did not change remarkably with NDGD increasing. Variance of FA value within two ROIs with high gray value (genu and splenial of corpus callosum) fluctuated randomly and SNR increased slightly, while variance of FA value within the ROIs with low gray value (genu and posterior limb of internal capsule) diminished significantly with NDGD increasing. Conclusion In clinical applications of DTI, an optimum NDGD for DTI data acquisition should be selected according to the ROIs in human brain to be inspected.

Objective To study the diagnosis and treatment of mesenteric diseases,and to enhance the understanding.Methods The clinical and histopathological data of 114 cases of mesenteric diseases were retrospectively analyzed.Results The percentage of mesenteric diseases was 0.06% of all inpatients during the same period;the causes were as follows,inflammation (53.5%),tumor (33.3%),lesion of vessels (8.8%) and others (4.4%).The lesion sites were mostly in the mesentery of small intestine (64.0%).The confirming diagnostic methods were exploratory laparotomy,laparoscopy,fine needle aspiration biopsy and ultrasonography.The therapeutic strategies were cause-oriented,but the prognosis of those with unknown causes was poor.Conclusion Mesenteric diseases are clinically rare,and the prognosis of some of the types is unfavourable.

Objective:To study the pharmacokinetic paramet er s of tinidazole in saliva. Methods:Tinidazole was separated on U ltrasphere ODS (C 18 column, 5 ?m,4.6 mm?25 cm)column with a mobile phas e of MeOH-2.33?10 -3 mol/L acetic acid 32∶68(v/v). The sample s were quantified with an ultraviolet detector operated at 310 nm. Resul ts:The saliva T max of the tinidazole tablets was (1.64?0.94) h,C max (69.23?11.39) ?g/ml,K e 0.059 6?0.013 2,T 1/2 (11.952?2.374) h,Auc (83.42?11.49) ?g?h/ml,Cl r 60.64? 8.56 and V r (2 704.45?601.42) ml respectively.Conclus ion:The method can be used for clinical monitoring of tinidazole in sali va.

Objective To study the expression of NM-23 ,PCNA,p53 and S-100 in colorectal cancer tissues and their relationship.Methods Three hundred and seventy eases of elderly eolorectal cancer were labelled with NM-23,PCNA,p53 and S-100 and staged by pTNM classification.Results The positive rates of NM-23,PCNA,p53 and S-100 were 74.9% ,60.3% ,58.1% ,68.1% respectively.In elderly group,the expression of NM-23 had a neg-ative correlation with that of PCNA (r = -0.101 ,P = 0.026).However the expression of NM-23 had a positive corre-lation with that of p53 (r =0.111 ,P =0.016 ),the expression of S-100 had a positive correlation with that of p53 (r=0.112,P = 0.015 ),the expression of S-100 had a positive correlation with that of PCNA (r =-0.229,P =0.000).Conclusions In the elderly patients,NM-23,p53 and S-100 were significantly correlated with the inva-sion,metastasis and prognosis of eoloreetal cancer.PCNA may be a stimulative factor in the invasion and metastasis of colorectal cancer.NM-23 ,PCNA,p53 and S-100 can serve as effective markers in reflecting the invasion,metas-tasis and prognosis of colorectal carcinoma in the elderly.

ObjectiveTo investigate whether the T1-weighted dynamic contrast-enhanced perfusion magnetic resonance imaging (DCEPMRI) technique can help to delineate the clinical target volume of brain glioma patients.MethodsThe DCE T1-weighted images from 28 glioma patients were collected after GdDTPA was injected.After the acquired images were processed and analyzed using modified Tofts-Kermode'two compartment analysis model and de-convolution method,the value and its pseudo mapping of quantitative parameter Ktrans related to microvascular permeability were obtained.The tumor size in the largest diameter slice measured both in routine enhanced MRI and Ktrans mapping of T1-weighted DCEPMRI were compared.ResultsThe vascular permeability and tumor infiltration was lower in low grade glioma,the difference of the tumor size between T1-weighted DCEPMRI and routine enhanced MRI reached 0.2％ -0.3％ there was significant difference of tumor size between T1 -weighted DCEPMRI and routine enhanced MRI ( grade Ⅰ and Ⅱ grade with 2.93 cm2∶2.46 cm2(t=6.90,P=0.000) and 4.18 cm2∶3.21 cm2(t=10.22,P=0.000) ).While in high grade glioma,the vascular permeability and the tumor infiltration were higher,the difference of the tumor size between T1-weighted DCEPMRI and routine enhanced MRI reached 25％ - 26％( the size of grade Ⅲ and Ⅳ were 6.46 cm2 vs 5.48 cm2 ( t =10.83,P =0.000) and 8.26 cm2 vs 6.52 cm2(t =18.53,P =0.000) ).ConclusionsThe pseudo mapping of quantitative parameter Ktrans related to microvascular permeability acquired by T1-weighted DCEPMRI reflect the infiltrating circumscription in glioma,T1-weighted DCEPMRI can provide more information in delineation the clinical target volume,and it can be used as a new method for tumor volume evaluation.

Objective To evaluate the chang es of hemodynamics and the relationship with the outcome in patients with severe h epatitis treated with molecular adsorbents recirculating system (MARS). Methods A total of 16 patients with severe hepatitis were t reated with MARS for 36 times altogether as the treatment group. Twenty patients with severe hepatitis were treated by comprehensive methods as the control grou p. The age, sex and liver function between the two groups matched. Their prognos is was observed and the levels of serum total bilirubin, the non-conjugated bil irubin and mean arterial pressure (MAP), and heart rate were observed in the pat ients during a single 6 h to 8 h treatment with MARS. The relationship between the change and prognosis was observed. Results There were significant differences in prognosis and complications between the two groups. T he survival rate in treatment and control groups was 62.5% and 37.5%, respective ly (P

OBJECTIVE:To observe the efficacy and safety of carboprost and Foley catheter for the expand cervix before hys-teroscopic electric resection. METHODS:80 patients with hysteroscopic operation were randomly divided into research group and control group. Research group was placed inside the vagina carboprost 1 mg 30 minutes before operation;control group was placed inside the Foley catheter 12 hour before operation. The relaxation degree of the cervix,average operative time,preoperative pain, postoperative morbidity and incidence of adverse reactions in 2 groups were observed. RESULTS:There were no significant differ-ences in the relaxation degree of the cervix,postoperative morbidity and incidence of adverse reactions between 2 groups(P>0.05). The average operative time and preoperative pain in research group were significantly better than control group,the differ-ence was statistically significant(P<0.05). CONCLUSIONS:Carboprost and Foley catheter have good efficacy and safety for ex-pand cervix before hysteroscopic electric resection,however,carboprost is better than Foley catheter in terms of average operative time and preoperative pain.

By combing differe nt modelin g factors and evaluation indicators of experimental animals of polycystic o-vary syndrome (PCOS), application scope, advantages and disadvantages were analyzed among various kinds of animal models, in order to screen models of etiology and pathogenesis in traditional Chinese medicine (TCM). Through the collection of 77 Chinese literatures published since 1979, the database on PCOS of modeling factors (i.e., animal species, age, modeling reagent and dose, etc.) and evaluation indicators (i.e., ovarian morphology and hormone levels) were established, analyzed and summarized. The results showed that the experimental PCOS models established by researchers both at home and abroad included androgen method, combination method of androgen with HCG, combi-nation method of progestrone with HCG, estrogen method, aromatic cyclase inhibitor method, combination method of HCG with insulin, combination method of androgen with insulin, insulin method, and etc. The SD and Wistar rats at the age of 3-50 days were commonly used. Chemicals, such as dehydroepiandrosterone (DHEA), testosterone propi-onate, sodium prasterone sulfate, dihydrotestosterone (DHT), levonorgestrel, estradiol valerate, letrozole, insulin and HCG were chosen to build the animal models. The evaluation indicators included ovarian morphology, the total num-ber of follicles at different levels, sex hormones (E2, P, T, FSH, LH) and insulin resistance (IR) index (FINS, FPG, HOMA). It was concluded that each modeling method described above had its own advantages and disadvantages, which cannot completely simulate clinical onset process of PCOS patients. Researchers should choose appropriate reagent and evaluation index according to different purpose. DHEA, DHT slow-release, progesterone combined with HCG modeling methods are more suitable for the study of the role of IR in the pathogenesis of PCOS. Kidney-defi-ciency and dampness-phlegm is fundamental etiology and pathogenesis of obese type of PCOS. DHEA method, com-bination method of levonorgestrel with HCG, aromatic cyclase inhibitor method conformed obese type of PCOS. The evaluation indicators included body weight, sex hormones, IR index and ovarian morphology. The method of kidney-tonifying and phlegm-reducing was often used in the treatment of obese type of PCOS in the clinical practice.