Objective To investigate the prevalence of benign prostatic hyperplasia (BPH) in Beijing. Methods A cross-sectional study was performed at Beijing communities in men aged over 50 years. The International Prostate Symptom Score (IPSS) questionnaire was used to evaluate the symptoms. Transabdominal ultrasonography was used to measure prostate size and the residual urine volume(RUV). Uroflowmetry was performed to record the maximum flow(Q_(max)). One-way ANOVA was used to analysis the differences. Results 1644 subjects were enrolled and the mean age was 64. 5 years (range 50 - 93 years). The mean IPSS, prostate weight andQ_(max) were 9. 9±8. 2, (30. 8± 19.4) and (14. 7 ± 7. 5)ml/s, respectively. They had correlation with age (r=0. 388,0. 262, - 0.371). The prevalence of moderate-severe lower urinary tract symptoms (LUTS) was 50. 8% (835/1644). Prostate volume was greater than 20 ml in 69. 7%(1146/1644) of the subjects.Q_(max) was less than 15 ml/s in 53. 8% (883/1642) of the subjects. Conclusions In men age over 50 years in Beijing, there is positive correlation between LUTS, prostate size and age, and negative correlation between Q_(max) and age. The prevalence of BPH, defined as IPSS greater than 7, maxium flow rate less than 15 ml/s and prostate size greater than 20 ml, is 26. 8%(441/1644).

T is the etiologic mutation in this family.Screening of female carrier state and follow-up study of the confirmed carriers are important for X-liked DCM family.

Objective To investigate the prevalence of sexual dysfunction in aged men and associated risk factors in Beijing. Methods A cross-sectional study was performed in communities of Beijing involved 1656 men aged over 50 years.The International Index of Erectile Function-5 (IIEF-5),Brief Male Sexual Function Inventory for Urology ( O'Leary 1995 ) and the International Prostate Symptom Score (IPSS)questionnaires was recorded.The body mass index (BMI),prostate size was measured.The survey was conducted to make sure if the patients had diabetes,high blood pressure,hyperlipidemia,cerebrovascular history,and smoking and drinking situation.Pearson's X2 test and unconditional logistic regression were used to investigate the factors associated with sexual dysfunction. Results 1644 subjects were enrolled.The incidence of ED,reduction of sexual desire and defective ejaculation was 90.45％,60.04％ and 38.81％ respectively,and significantly different according to age ( P ＜ O.05 ). Age was positively correlated with ED (3 =0.12,P＜0.05),reduction of sexual desire (β =0.10,P＜0.05) and defective ejaculation (β =0.10,P ＜ 0.05 ) ; ED was significantly associated with BMI (β =0.07,P ＜ 0.05 ).Hypertension and prostate size were risk factors for reduction of sexual desire and defective ejaculation; There was correlation between drinking and defective ejaculation ( β =- O.31,P ＜ 0.05 ). Conelusions Compared with high prevalence of ED and lower sexual desire,the incidence of defective ejaculation were lower; this may reflect the sexual activities of aged male were more active compared with the less success of really erection.The prevalence of ED,reduction of sexual desire or defective ejaculation increased with age.BMI was the risk factor for ED.Enlarged prostate and hypertension was associated with reduction of sexual desire,and drinking was the risk factor for defective ejaculation.

Objecitve To conclude the clinical manifestation of Fournier's gangrene (FG) and its emergency treatment.Methods From 2006 to 201 1,12 patient were involved in the study,all had received debridement,wide spectrum antibiotics and support therapy,the clinical manifestation,treatment choice and prognosis were analyzed retrospectively.Results All patients were male with 67.7 year-old mean age.Initial lesions were all in scrotal skin,an average procedures of each patient was 3.5,mean hospitalization days was 29.7 days.Surgical wound was healed by left scrotal skin in all cases,2 cases with huge urethra defect were received perineostomy.Ten cases were survived with 57-months follow-up and mortality was 16.7％.Conclusions Fournier is one of emergency disease of Urology.Its mortality is still high.Intensive care and appropriate anti-biotic therapy combined with surgical treatment is the key of FG's management.

Objective To investigate the curative effect of RevoLix 2 micron continuous wave laser va-poresection for treatment of elderly and high risk benign prostatic hyperplasia patients. Methods Clinical data of 36 benign prostatic hyperplasia patients with medical complications aging 70 -82 years were retro-spectively analyzed. Operations were done after their complications were controlled. The RevoLix 2 μm laser system with output power of 70 W was used, and normal saline was used as rinse solution. Operations were started after positions of seminal colliculns and distances to neck of bladder were confirmed. Results Oper-ation time varied from 65 to 135 rain with a mean time of (83.6±10. 6) rain. Occasional venous hemor-rhage occurred during operation but no arterial hemorrhage was observed. No blood transfusion necessitated and no TURP syndrome was observed. Catheter was removed 2-4 days after operation. All the patients could urinate freely. No urinary incontinence was found during follow-up except 2 patients with temporary urinary incontinence. A 3-6 months follow-up showed that IPSS decreased from 24. 26 ±2. 70 to 8.47±4. 32, QOL dropped from 4. 51±0. 56 to 1.34 ± 0. 53, and Qmax increased from (6. 37 ± 1.31) mL/s to (17.24± 2. 32) mL/s. Conclusions RevoLix 2 micron continuous wave laser vaporesection is a safe and effective method with less trauma and fast recovery for treating elderly and high risk benign prostatic hyperplasia pa-tients.

Objective To evaluate whether the unidirectional barbed suture is safety and efficiency enough for laparoscopic partial nephrectomy.Method From March 2013 to March 2014,27 patients with renal mass have been involved into this study and divided into 2 groups wsing a lottery.Group A used Coated Vicryl in renorrhaphy after LPN,and group B used unidirectional barbed suture.All patients underwent LPN preformed by single group of surgeons.Perioperative and postoperative indicators were compared in two groups.Result It is identical in age,BMI,tumor size,R.E.N.A.L nephrometry scoring system between 2 groups.However,using barbed suture has significantly shortened in warm ischemia time (WIT).The postoperative indicators,such as blood loss,hospital stay and surgery complication has no significantly difference in two groups.Conclusion The unidirectional barbed suture is safety and efficiency using in LPN which can shorten WIT significantly.

Objective To compare the agreement among Chinese 1992, 2008 and UICC 2010 staging systems of nasopharyngeal carcinoma (NPC) and evaluate their predictive value of radiotherapeutic prognosis.Methods 347 NPC patients without distant metastasis treated in our hospital from 2000 to 2005 were retrospectively analyzed.Every patient was categorized into T, N, and clinical stage by Chinese 1992, 2008 and UICC 2010 staging systems, respectively.Kappa value was used to evaluate the agreement among three systems.Kaplan-Meier method was used to analyze the 5-year overall survival (OS), local-free survival (LFS) and distant metastasis-free survival (DMFS), the difference between subgroup was tested by Logrank.Results The agreement of clinical stage, T and N stage between Chinese 2008 and UICC 2010 staging system was better than that of them compared to 1992 staging system, Kappa value were 0.700、0.881 and 0.722.The agreement of T stage was better than N and clinical stage among these three staging system.The difference of OS between stageⅢ and stage Ⅳ was significant in Chinese 2008 and UICC 2010 staging system (χ2=4.48,P=0.034;χ2=8.88,P=0.003), and with no different in 1992 staging system (χ2=0.40,P=0.526).There was no significant difference of LFS between T1 and T2,T2 and T3,T3 and T4 in all staging systems (χ2=1.85,0.53,0.50,P=0.174,0.467,0.479;χ2=1.25,2.10,1.99,P=0.264,0.148,0.159;χ2=0.77,0.60,0.87, P=0.381,0.441,0.350).There were no significant differencesin 1992 staging system, while there was significant differences of DMFS between N1 and N2, N2 and N3 in 2008 stage system, N1 and N2 in UICC 2010 stage system.Conclusions The predictive value of Chinese 2008 and UICC 2010 staging system for prognosis were similar, and were better than that of 1992 staging system in NPC.

Objective To investigate the clinical characteristics and treatmentof ureteral endometriosis.MethodsA retrospective analysis was made on the clinical data of 16 cases of ureteral endometriosis of the Department of Vrology,Beijing Friendship Hapital,Affiliated to Copital Medical Universty from January.1991 to Augest.2011.ResultsSixteen cases were pathologically confirmed endometriosis,including 11 cases of outer lumen type,5 cases of lumen type ; endomctriosis lesions were all located in the lower ureter.Ureteral stricture length was 1.0-4.0 cm.During 12 months to 20 years follow-up,hydronephrosis detected by ultrasonography in 15 patients was released significantly,and no recurrence occurred except one case who was found hydronephrosis 3 years later.Ureter anastomosis was undergone later.ConclusionsUreteral endometriosis onset is undetectable which could impact renal function.Renal ultrasonography can reduce misdiagnosis.The principle of treatment is to remove the obstruction and protect renal function,and well follow-up to prevent recurrence.

Objective To evaluate the feasibility of using pure laparoscopic radical nephrectomy and thrombectomy to treat renal tumor with renal vein and vena caval thrombus. Methods Two ca-ses o{ right renal tumor with renal vein and vena caval thrombus were reported. Contrast-enchanced CT showed renal tumor extended into renal vein and vena cava in 1 case, and filling defect was found in right renal vein and extended to vena cava in the other. Both patients received pure laparoscopic ra-dical nephrectomy and thrombectomy through retroperitoneal approach. Four trocars were placed du-ring the operation, and the renal artery was dissected before the vena cava was mobilized circumferen-tially above and below the renal vein, a faparoscopic vessel blockage clamp was used to partly occlude the vena cava containing the thrombus. The vena cava was repaired after the intact tumor thrombus was extracted. Results The tumor thrombus extended 0.3 cm and 1.0 cm above the renal vein, re-spectively. Both patients were discharged 5 d after operation. Pathological examinations showed that tumors were epithelioid renal angiomyolipoma and grade Ⅰ-Ⅱ clear cell carcinoma separately. Both patients were free of local recurrence and metastasis 5 months after operation. Conclusion Pure la- paroscopic radical nephrectomy and thrombectomy for renal tumor with vena caval and renal vein thrombus is feasible in carefully selected patients.

Objective To investigate the changes of target during fractionated radiotherapy for e-sophageal cancer, and to assess their impact on the implementation of radiotherapy. Methods Fourteen pa-tients with unresectable esophageal cancer were enrolled to receive full course conformal radiotherapy. CT scans were performed after every ten fractions. New targets (GTV) were delineated on repeated CT scans. Then the pretreatment radiotherapy plans were copied to the new targets to investigate the conformity between the new GTV and the plans. Results The majority of the GTVs decreased with the increasing fractions dur-ing radiotherapy. However, GTVs of 35.7% (5/14) patients increased by 2.0%-37.7% at the tenth frac-tion. The PTVs covered by 95% isodose curve at the time of pretreatment,tenth fraction,twentieth fraction and thirtieth fraction were 97.81%±1.53%, 91.95%±5.25%, 94.27%±4.23% and 94.03%±6.45%, respectively. Moreover, at tenth, twentieth and thirtieth fraction, there were 6,5, and 4 patients whose PTVs covered by 95% isodose curve were below 95%, respectively. Conclusions There are signifi-cant target changes during fractionated radiotherapy for esophageal cancer, which may result in uncertainties of radiotherapy implementation.