Objective To study the relationship between lymph node micrometastasis and clinicopathological parameters. Methods Immunohistochemical method was adopted to detect CK19,CK20 and CD44v6 in 509 lymph nodes from 53 cases of gastric cancer, in which, conventional pathological diagnosis showed no lymph node metastasis. Results Micrometastasis was found in 47 lymph nodes (9.2%) of 21cases ( 39.6 %). The incidence of micrometastasis was correlated with the depth of invasion, and the incidence of micrometastasis in PT 3 and PT 4 patients was more than that in PT 1 and PT 2 patients(P

Objective To investigate the effect of vitamin K3 decreasing the urine oxalate excretion in rats. Methods A total of 80 male Sprague-Dawley rats (body weight, 200-250g) were randomly divided into 8 groups, ie, control group, only vitamin K3 group, stone forming group, stone forming plus 4.0、3.0、2.0、0.8、0.4mg/d Vit K3 group. Each group is 10 rats respectively. The change of urine oxalate was observed. Results Vitamin K3 can reduce the 24h urine oxalate excretion in stone-forming group rats, but there were no effects in control group rats(P

Objective To investigate the effect of different doses of Vitamin K3 on the expression of osteopontin in rats kidney. Methods After different dose of Vitamin K3 were injected to different groups of rats feeded with same stone-inducing agent, the level of expression of OPN in renal tissues was observed with immunohistological staining. Results OPN expression located at distal convoluted tubule when the rats feeded without stone-inducing agent, and the OPN expression stain was extended to proximal convoluted tubule when the stone-inducing agent was feeded. Vitamin K3 can decrease the extension of OPN expression induced by the agent and more doses of Vitamin K3, more effects. Conclusions Vitamin K3 can decrease the expression of OPN in the kidney tubule of rats feeded with stone-induced agent.

AIM: To investigate p16 gene alterations in gastric carcinoma. METHODS: 36 fresh tumor specimens taken from gastric cancer patients were analyzed for p16 gene deletion and mutation by polymerase chain reaction (PCR) and DNA sequencing. RESULTS: Homozygous deletion of exon 1 and exon 3 was observed in 2 cases and 3 cases of diffuse carcinoma, respectively. The frequency of homozygous deletion was 13.89%. No p16 gene point mutation was detected. CONCLUSION: The deletion of p16 genes may be related to gastric carcinogenesis.

Background and purpose:Bladder cancer radical surgery is dififcult with many perioperative complications, and the learning curve is long. To introduce the clinical application of complete retrograde radical cystectomy and consequent abdominal cavity reconstruction in male bladder cancer, and to provide a standardized surgical procedure with minimum perioperative complications and short learning curve. Methods:From Apr. 2012 to Apr. 2013, 110 cases of male patients with bladder cancer received this procedure in our department, with a median age of 64 (35-83) years;Preoperative characters, surgical parameters, perioperative complications, pathology, long-term complications and short-term prognosis were collected and analyzed. Results:The median number of lymph nodes resected in operation was 12 (8-16);Neurovascular bundles were reserved bilaterally in 65 cases, and unilaterally in 31 cases;The complete procedure including urinary diversion took 4.4 (2.2-6.0) hours, with a median time of opened abdominal cavity of 43.0 (5.0-75.0) minutes;The median blood loss was 140.0 (50.0-600.0) mL, and 4 patients needed transfusion; Median time of abdominal and pelvic drainage was 10.0 (6.0-15.0) days, the median gastrointestinal recovery time was 2.5 (1.0-12.0) days, and the median postoperative hospital stay was 17.0 (10.0-39.0) days;Grade 2 Clavien-Dindo classiifcation (CDC) of surgical complications that required medical intervention were found in 19 cases, CDC grade 3 or above were found in 8 cases;Mild to moderate postoperative ileus happened in 5 cases, all recovered in median 2 (1-4) weeks with supportive treatments;There were no perioperative deaths. All samples were sent to pathological analyses. After a median follow-up of 9 (3-15) months, no complications of or above CDC grade 3 happened, and there were no recurrence. Conclusion:Complete retrograde radical cystectomy in male bladder cancer provided clear anatomical approach, reliable neurovascular bundle preservation, less blood loss, limited abdominal organs disturbance and better surgical exposure; With respect to tumor control, more peritoneal was retained for subsequent abdominal cavity reconstruction. The introduced procedure effectively speeded up gastrointestinal recovery, reduced postoperative complications, especially the incidence of ileus and its severity, and shortened hospital stay. The learning curve of this procedure for urologists was short, and further investigation was warranted.

Background and purpose:The association between metabolic syndrome (MS) and renal cell carcinoma (RCC) is still unknown. The aim of this study was to elucidate how MS correlates with the prevalence and malignancy of RCC.Methods:This study enrolled 398 RCC patients (350 clear cell RCC patients, 5 XP11.2 transloca-tion RCC patients, 16 papillary RCC patients and 27 chromophobe RCC patients), 160 normal persons, and 32 benign renal tumor patients. The metabolic status of the patients was assessed, and the link between MS and the prevalence or malignancy of RCC was calculated.Results:Clear cell RCC patients had signiifcantly higher rates of hypertension, higher body mass index (BMI) and longer waist circumference. Forty-eight percent clear cell RCC patients had MS, while the number was 33% for papillary RCC, 26% for chromophobe RCC, 0% for XP11.2, 17% for AML, and 25%for normal people. MS patients had signiifcant higher rates of having clear cell RCC than no-MS patients, however this kind of difference was not seen in other types of RCC. Clear cell RCC patients with higher Furhman grade had lower rates of MS.Conclusion:Patients with MS are more likely to develop clear cell RCC. Patients with high Furhman grade tumors have low MS rates, indicating that high grade tumor may have other originating mechanisms other than metabolic disorders.

Objective To introduce the technical improvements in retroperitoneal laparoscopic radical nephrectomy and discuss their roles in decreasing the perioperative complication. Methods Sixty-one patients with localized renal cell carcinoma were treated with retroperitoneal laparoscopic radical nephrectomy from December 2006 to March 2008. Pre-operative CT scan was performed to evaluate the renal vessel status. Thirty degree laparoscope was used together with self-made balloon dilator to establish the retroperitoneal space. Harmonic scalpel was used in dissection and removal of the extra-peritoneal fat. Cautions were taken during the separation of peritoneum. The renal artery and vein were separated and ligated with Hem-o-lok clips. Complications such as vessel split and intes-tinal injury were recorded. Operation time, estimated blood loss, drainage volume, and length of hos-pital stay were analyzed as well. Results The operation time was 50-135 min, estimated blood loss during operation was 20-170 ml, post-operative drainage volume was 20-210 ml, mean post-opera-tive length of hospital stay was 5 d. Two complications occurred during the operation: one was a vena eava injury, and another was a minor duodenum wall perforation. Conclusions Retroperitoneal lapa-roscopic radical nephrectomy is an effective and safe surgical option for localized renal cell carcinoma. Improvements in this surgical technique bring more safety and convenience and could decrease perio-perative complications relatively.

Objective To discuss the function of pelvic lymphadenectomy in radical cystectomy. Methods Ninety-five patients with bladder cancer (76 males and 19 females) underwent radical cys-tectomy. Clinical data were reviewed. Median age was 62 years old (25-78). Among all patients, 49 were newly diagnosed and 46 had recurrent disease. Of 95 patients, 87 were urothelial cell carcinoma, 5 were adenocarcinoma, and 3 were squamous cell carcinoma. Of 87 urothelial cell carcinoma cases, 17 were grade 1, 39 were grade 2, and 31 were grade 3. Of 95 patients, 10 were Ta-T1,54 were T2 ,26 were T3 ,and 5 were T4 according to AJCC classification. All cases accepted bilateral pelvic lymphade-nectomy according to standard protocol. Results Bilateral lymphadenectomy was taken an average time about 20 min. No important vessels and nerves injury occurred and average bleeding volume was 25 ml during procedure. A median of 10 lymph nodes were removed (range, 1-20). The nodal posi-tive rate was 17.9% (17/95) with 58.8% (10/17) bilateral lymph nodes positive. Short-term opera-tion-related complication rate was 12.6% (12/95). No operation-related death happened. Median fol-low up time was 34 months (3 to 64 months). Sixteen cases died during followup and the 3-year over-all survival rate was 84.5%. Conclusions Bilateral pelvic lymphadenectomy should be routinely per-formed during radical cystectomy. Standard lymphadenectomy could document accurately the staging and improve the overall survival in radical cystectomy without severe complications.

Objective To investigate the toxicities of sorafenib in the treatment of advanced re-nal cell carcinoma, and discuss the management. Methods Fifty-eight patients with advanced renal cell carcinoma were treated with sorafenib from March 2006 to February 2008. Of them, 44 were males and 14 were females with the average age of 50 years. Single agent of sorafenib 400 mg twice daily was administrated to 49 patients, and the other 9 patients were given sorafenib and Interferon-a as a combination therapy. The main toxicities such as hand-foot syndrome, alopecia, rash, mucositis, fatigue, diarrhea, weight loss, hypertension, hemoptysis, liver dysfunction, hypophosphatemia and anemia were analyzed for their occurrence time, duration, and grade. Results The toxicities of sor-afenib included hand-foot skin reaction (75.9%), alopecia (67.2%), rash (39.7%), mucositis (24.1%), fatigue (74.1%), hypertension (24.1%), and liver dysfunction (13.8%). Twelve cases (20.7%) experienced grade 3 toxicities and had dose reduced; and two cases encountered grade 4 tox-icities and had permanent withdraw. Conclusions There is peculiarity in treating Chinese advanced renal cell carcinoma patients with sorafenib. The incidences of major toxicities of sorafenib are higher in Chinese patients than what have been observed in studies conducted in US and Europe. Toxicities such as hemorrhage and angina could also appear and need carefully monitored. Generally, most of the toxicities of sorafenib are grade 1 and 2, and easy to be managed in clinic.

BACKGROUND:CT-guided percutaneous intervention and rehabilitation techniques are both classic programs for diagnosis and treatment of lumbar disc herniation. Is the combination of CT-guided percutaneous intervention and rehabilitation techniques preferential y used for treatment of lumbar disc herniation?
OBJECTIVE:To evaluate the curative effect of CT-guided interventional injection combined with rehabilitation integration treatment for lumbar disc herniation and to analyze prognostic factors.
METHODS:Eighty-eight patients with lumbar disc herniation were subjected to CT-guided interventional injection combined with rehabilitation integration treatment from May 2010 to May 2013. Injection medicine consisted of betamethasone, tanshinone Ⅱ A sulfonate, neurotropin, normal saline and iohexol. Rehabilitation integration treatment included traction, manipulation, acupuncture, transcutaneous electrical nerve stimulation and thermal magnon. Macnab criteria and Chinese version of Oswestry low back pain disability questionnaire were used to assess the curative effects in comparison with the 112 patients receiving only CT-guided interventional injection that were reported previously. The prognostic factors, such as age, disease course time and herniation type of target segment were testified by correlation analysis.
RESULTS AND CONCLUSION:Total y 77 patients were completely fol owed up for 1 year. There were excellent outcomes in 64 cases, while favorable outcomes in 7 cases, fair outcomes in 5 case, poor outcome in 1 case, with a better outcome rate of 92%.There was a significantly decreased trend in Oswestry disability Index scores at 1, 6, 12 months during the fol ow-ups (P<0.01). No severe complications occurred in al the included patients. The curative effects were improved in term of better outcomes rate compared with the 112 patients receiving only CT-guided interventional injection, but there was no significant difference (P>0.05). The young group (≤ 45 years) had better outcomes than the older group (>45 years;P<0.01). In addition, disease course time and herniation type of target segment were not statistical y significant risk factors predicting clinical results (P>0.05). These findings indicate that CT-guided interventional injection combined with rehabilitation integration treatment could relieve lower back pain and radical leg pain effectively and decrease life disability level.