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69% vs 0.87%, respectively). Compared with patients with SVR, patients without SVR had a significantly higher risk of gastric cancer (0.10% vs 0.03% per person-year, P = 0.004) and non-Hodgkin lymphoma (NHL) (0.08% vs 0.03% per person-year, respectively, P = 0.03). When considering death as a competing risk, non-SVR was independently associated with gastric cancer (hazard ratio [HR]/95% confidence intervals [CIs] 3.29/1.37-7.93, P = 0.008). When patients were stratified by age, the effect of SVR in reducing gastric cancer (HR/CI 0.30/0.11-0.83) and NHL (HR/CI 0.28/0.09-0.85) was noted only in patients aged 65 years. DISCUSSION HCV eradication reduced the risk of gastric cancer and NHL, in particular among younger patients, indicating that patients with chronic hepatitis C should be treated as early as possible.INTRODUCTION Pharmacological interventions have not been successful in the treatment of childhood functional abdominal pain (FAP) hitherto. Buspirone is suggested to be efficacious in some of the abdominal pain-related functional gastrointestinal disorders based on evidences from the studies on adults. We aim to investigate the efficacy of buspirone on childhood FAP. METHODS This randomized clinical trial was conducted on 117 patients with childhood FAP aged 6-18 years. D609 nmr We randomly assigned patients to receive buspirone or placebo for 4 weeks, with the adjusted dosage for age. Participants completed the questionnaires assessing pain, depression, anxiety, somatization, and sleep disturbances at baseline, at the end of the 4-week therapy (first follow-up), and at 8 weeks after medication discontinuation (second follow-up). The primary outcome was treatment response rate, defined as reduced pain score of ≥2 or reporting no pain at the follow-up assessments. RESULTS Ninety-five patients completed the 4-week therapy (48 and 47 in buspirone and placebo groups, respectively). Both buspirone and placebo reduced pain after 4 weeks of treatment, and these effects were persistent 8 weeks after medication discontinuation (P less then 0.001 for both groups at weeks 4 and 12). Treatment response rates for buspirone and placebo were 58.3% and 59.6% at week 4 (P = 0.902) and 68.1% and 71.1% at week 12 (P = 0.753), respectively. DISCUSSION Buspirone effectively improves pain and associated psychological symptoms including depressive symptoms, anxiety, somatization, and sleep disturbances in childhood FAP but has no superiority over placebo. Further studies, with the higher doses of buspirone and longer follow-ups are recommended.BACKGROUND Hepatitis C virus (HCV) is the most common viral infection among illicit drug users in the world. Although intervention of needle and syringe program and opioid substitution therapy had engaged to prevent HCV infection, the prevalence of HCV infection seem not declined. The aim of this study was to estimate risk of HCV infection in injection drug uses (IDUs) and non-injection drug users (NIDUs) receiving opioid substitution therapy. METHODS We recruited 1179 heroin-dependent patients (age 20 – 66 years) under opioid substitution therapy from 2012 to 2015 in a Psychiatric Center, Southern Taiwan. The data of HCV, hepatitis B virus (HBV) and HIV infection and liver biochemical examination were obtained. We used multivariate logistic regression analysis to predict the risk of HCV infection. RESULTS There were 93.1% of IDUs and 68.1% of NIDUs positive for HCV infection. In IDUs, HIV infection, age of heroin initiation, duration and dose of heroin use, frequency of detoxification and number of criminal conviction were significantly associated with HCV infection. In NIDUs, snort/sniff heroin exhibited a significantly increased risk of HCV infection. Intravenous injecting (OR = 23.10; 95% CI = 8.04, 66.40, p less then 0.001), intravenous injecting combined snort/sniff (OR = 12.95; 95% CI = 3.90, 42.97, p less then 0.001) and snort/sniff (OR = 4.14; 95% CI = 1.30, 13.18, p = 0.016) were significantly associated with increased risk of HCV infection compared with smoking. The trend was significant (p for trend less then 0.001) CONCLUSION. In Taiwan, IDUs had harmful characteristics compared with NIDUs and both had extremely high prevalence of HCV infection. We provided evidence that snort/sniff is a possible way of leak in HCV infection despite needle-syringes supplement program been provided. Opioid substitution therapy program should include HCV assessment and treatment in the new direct-acting antiviral therapy era.BACKGROUND Chondrosarcoma is the second most common primary sarcoma of the bone. Surgery remains the gold standard for treatment due to chemotherapy and radiotherapy resistance in chondrosarcoma. The main aim of our study was to analyze patients with primary chondrosarcoma of the bone who were treated in a single tumor center. We identified the prognostic factors for overall survival, metastasis-free survival, and recurrence-free survival. METHODS From 1998 to 2012, 55 consecutive patients were treated surgically. All patients were followed for local recurrence or distant metastasis. Uni- and multivariate analyses were performed for overall, metastasis-free and recurrence-free survival. RESULTS Local recurrence developed in 29 of the 55 patients (52.7%). Recurrence-free survival in the multivariate analysis showed a significant association with the surgical margin, and high-grade lesions were an independent factor for local recurrence.In total, 11 patients died of the disease in the study, and the 5- and 10-year survival rates were 84.4% and 78.1%, respectively. The tumor grade and local recurrence were significant factors in the univariate analysis but were insignificant in the Cox regression with time-dependent covariates (p = 0.327 and p = 0.82, respectively). The development of distant metastasis was a significant poor prognostic factor in both the uni- and multivariate analyses. CONCLUSION Chondrosarcoma of the bone is a disease with surgery-dependent outcomes; but, however, patients often develop subsequent recurrence of the disease. The surgical margins were statistically associated with the risk of subsequent local recurrence but did not predict survival. The development of distant metastases was an independent prognostic factor for poor survival.