Objective To explore the mental-behavior characteristics in serious internet game addicts.Methods To investigate internet addiction questionnaire, EPQ, social support questionnaire, purpose in life test and sensation seeking scale in 30 serious internet game addicts ( age from 16 ～ 25 years) and 43 non-addicts.Results Internet addicts have obviously lower social support questionnaire score, subjective support score, purpose in life test score and sensation seeking TAS score than non-addicts( P<0.05 or P<0.01 ). Objective support score, the use score for social support and sensation seeking score can forecast the internet addiction extent of the internet addict group. Internet addicts have obviously lower L score of EPQ than non-addicts ( P<0.01 ). There is the negative correlation between N score of the internet addicts and sensation seeking score( r=-0. 452, P<0.05). Conclusions Serious internet game addicts have the metal characteristics of low social support, low purpose in life and low adventure; sensation seeking and social support scale have prognosticative function for internet addiction degree; serious internet game addicts of low N score have high sensation seeking characteristic.

Thyroid cancer is one of common malignant tumor in neck, which can occur in any age. Females are more likely to have this disease than males. Most patients get a nodule on their thyroid, which typically does not cause any symptoms. Surgical resection is an effective method to cure thyroid cancer. In recent years, more and more evidence support that traditional Chinese medicine plays an important role in the recovery of postoperative thyroid carcinoma.

Objective To study the ways and effect of surgical treatment for recurrent hepatolithiasis. Methods The therapeutic patterns and the clinical effect were retrospectively analyzed for 163 patiens8 with recurrent hepatolithiasis from January 2004 to December 2006.The 86 patients were partical hepatectomy, the 77 patients were no hepatectomy. Results The excellent rate was 96.5%,the incidence of residual stone and recurrence was 5.8%and 1.2%respectively in partical hepatectomy-but 85.7%,15.6% and 11.7%in no hepatectomy. There were statistical significance between the partical hepatectomy and no hepatectomy(P＜0.05).Conclusion The therapeutic effect of the partial hepatectomy is better than that of the nohepatectomy for the patients with gallstone.

Gastrointestinal stromal tumor (GIST) is the most common mesenchymal tumors of the diges-tive tract. Along with histology progress, the people have made the new progress regarding the mesenchy-moma understanding, also proposed the new viewpoint to its treatment, the therapy of GIST has changed from surgical resection alone to surgery after the application of tyrosine kinase inhibitor. The article reviews the therapy of GIST and proposes possible therapeutic regimen.

Objective To know the experiences of head nurses about year-ending comprehensive check of work. Methods Interviewed 10 head nurses by qualitative study methods, summarized and ana-lyzed their experiences about year-ending comprehensive check of work. Results Five subjects about the year-ending comprehensive cheek of work were summarized, they were questions about the meaning of the check, experiences of the value of the nursing management work, influence of check on emotion, expectation of the head nurses' role and the ideas about future check. Conclusions The related nursing managers should emphasis head nurses' working designation and role, and then increase their working interesting, promote clinical nursing management developing smoothly.

Objective This study aims to develop a lottery addiction scale (LAS) for Chinese welfare lot-tery buyers. Methods A scale made by authors was applied to 8238 welfare lottery buyers from 31 provinces,one sample of 4071 cases for exploratory factor analysis (EFA) ,and the other 4167 cases for confirmatory factor analy-sis (CFA). Results Through EFA, the scale consisted 10 items established, and it was divided into two factors: functional impairment and emotional dependency. These two factors could explain 45.5% of total variance, The scale was confirmed by CFA (X2/df=13.34 ;IFI=0.96 ;CFI=0.96 ;NFI=0.96 ;RSMEA = 0.054). The internal consistencies of the scale answered to the basic statistic criterion (r=0.59～0.74). Criteria validity shown by higher LAS scores in high expending group than low expending group was also satisfying. Conclusion The LAS has good psychometric features and could be applied to Chinese lottery buyers.

Objective To analyze the morphologic characteristics of the single infarct in the territory of perforating arteries which arise from the middle cerebral artery (MCA),and further to investigate the association between the type of cerebral infarction and the isolated stenotic disease of the ipsilateral MCA.Methods Fifty-five patients with acute ischemic stroke who were admitted to the Department of Neurology,Peking Union Medical College Hospital,Beijing,China during January 1,2005 and December 31,2006 were identified.All of the patients had a single acute infarction in the territory of the MCA perforating arteries revealed on diffusion weighted imaging (DWI).Transcranial Doppler (TCD) and magnetic resonance angiography (MRA) were performed for all patients.Patients with stenesis >50% of proximal internal carotid artery and potential cardiac sources of embolism were excluded from the study.Patients were classified into 2 groups according to the presence of the atberosclerotic stenosis of the ipsilateral MCA: patients with or without MCA stenosis.Size of the lesions was measured including the diameter,area and volume.The infarcts with a diameter less than 2 cm were classified as lacunar infarcts; those bigger than 2 cm were classified as the striatocapsular infarcts.The infarcts on DWI was seen in basal ganglia,the body of lateral ventricle and beth.The concomitance of subcortical multiple small old infarcts or leucoariosis on T2>WI-MRI between the two groups was assessed.Results Among these 55 patients,14 (25.5%) had stenosis of the ipsilateral MCA and 41 (74.5%) had a normal MCA.In the group of MCA stenosis,71.4% patients were lacunar infarcts; 67.3% patients were also lacunar infarcts in the normal MCA group.There was no significant difference between the two groups (χ2=0.147,P=0.701).No significant difference in the diameter,area and vo|ume of the infarcts was found between the two groups.The basal ganglia,the body of lateral ventricle and both of these places involvement accounted for 31.7% ,17.1%,51.2% in the normal MCA group; 35.7%,28.6%,35.7% in the stenotic MCA group.No significant difference was found (χ2=1.272,P=0.529).Twenty-three (56.1%) patients had concomitant of small old subcortical multiple infarcts or leucoariosis in the normal MCA group and 3 (21.4%) in the MCA stenosis group,and there was a significant difference between the two groups(χ2=5.033,P=0.025).Conclusions A series of pathologic mechanisms are supposed to cause the single infarction in the territory of MCA perforating arteries.Stenosis of MCA is an underlying cause in addition to perforating artery diseases.There is no significant difference in the size,volume or distribution of the lesions between the two groups.The concomitant of subcortical multiple small old infarcts or leucoariosis may demonstrate the perforating artery disease.

Treatment of sacral fractures,unstable ones in particular,has attracted more and more attention.Despite numerous classification systems for sacral fractures,the commonly used ones are Denis and Tile classifications.Stable sacral fractures deserve conservative treatment,but unstable ones should be treated surgically,by operative reduction,internal fixation to reconstruct stability of the pelvis,and prevention or relief of nerve compression.There are many methods of internal fixation for unstable sacral fractures,and each has its own advantages and disadvantages.This review summarizes the progress in surgical treatment of unstable sacral fractures and makes comments on the latest surgical strategies.

By means of radioimmunoassay, leucine-enkephalin (L-ENK) in the uteri of women and rats was studied and its responses to ovarian steroids were observed. The histological localization of L-ENK and the influence of naloxone (NAL) on estrogen regulation of the rat uterus in terms of cAMP and eGMP determination were also studied. Results of the study demonstrated that presence of L-ENK like substance in the uteri of women and rats, and the concentrations varied in the various phases of the sexual cycle. indicating a positive correlation with levels of estrogen in the body. L-ENK was found localized in the interstetial cells of the human endometrium, and in the rat uterus. Effect of extrogen on nucleotide was influenced by NAL. The findings suggested that L-ENK may play an important role on physiologic function of utetus.

Objective To study the age-related changes of rat bone histomorphometry and its correlation to other parameters of bone metabolism. Methods Ten female SD rats at the age of 3 months old,9 months old and 15 months old were labeled with tetracycline(30 mg/kg) via abdomen on fourteen and four days before executing. Histomorphometry were performed on L4 and right tibiae. Physical density of left femur and L2 were measured. Anti-compression property of L3 was assayed. Serum levels of calcium and phosphorus and 1,25(OH)_ 2 D_ 3 were determined. Results Compared with the 3-month-old rats,the trabecular bone volume(TBV) of L4 and right tibiae decreased 43.3%( P