Objective To evaluate the safety and therapeutic effect of covered expandable metallic stent placement combined with interventional chemotherapy in treating malignant esophago-tracheal fistulae. Methods A total of 60 patients with esophago-tracheal fistula were enrolled in this study. The patients were randomly divided into control group (n=28) and study group (n=32). Patients of the control group were treated with covered stent implantation only, while patients of the study group were treated with combination use of covered stent implantation and interventional chemotherapy. All the patients were followed up regularly, the short-term and long-term results were determined, and the effect rate, median survival time and complications were statistically analyzed. Results Among the 60 patients, successful obstruction of the fistula was obtained in 58 with a success rate of 96.7%. The median survival time of the 58 patients was 5.8 months. The median survival time of the control group and the study group was 3.6 months and 8.7 months respectively, the difference between the two groups was statistically significant (P<0.05). The one-month, 3-month and 6-month effect rates were 78.1%, 68.8% and 62.5% respectively. The incidence of esophageal stent re-stenosis in the study group was much lower than that in the control group. Conclusion The combination use of covered stent implantation and interventional chemotherapy can effectively improve the median survival time of patients with malignant esophago-tracheal fistula, and reduce the occurrence of stent-related complications. Therefore, covered expandable metallic stent placement combined with interventional chemotherapy is an effective and safe treatment for malignant esophago-tracheal fistulae.

Objective:To analyze the correlation between hyperuricemia and obesity in young college students.Methods:A total of 19 673 students receiving enrolment physical examinations in Nanjing University from 2018 to 2019 were included in the study. The subjects were divided into underweight, normal, overweight, and obesity groups according to their body mass index. Fasting blood were taken to detect alanine aminotransferase (ALT), serum uric acid, urea nitrogen, and creatinine. The differences between serum uric acid and metabolic parameters among different groups as well as the correlation between body mass index and hyperuricemia were analyzed by using multivariate linear regression and logistic regression analysis.Results:The prevalence of hyperuricemia was 32.35% for the college students, while for the males it reached up to 57.30% that was significantly higher than female ones (6.51%, P<0.01). With the increasing of body mass index, the prevalence of hyperuricemia increased significantly( Ptrend<0.01), as well as serum uric acid in both male and female students ( Ptrend<0.01). Serum uric acid was positively correlated with body mass index in both genders( P<0.01). The odds ratio ( OR) and 95% confidence interval( CI) for overweight, obesity, and underweight body mass index groups were 2.30(95% CI 1.99-2.66), 4.35(95% CI 3.22-5.89), and 0.70(95% CI 0.60-0.82), respectively, compared to the normal body mass index group by adjusting possible factors such as gender, age, ALT, urea nitrogen, creatinine, as well asestimated glomerular filtration rate. Conclusion:The prevalence of hyperuricemia in young students is high. Obesity seems to be an independent risk factor of hyperuricemia.