https://www.selleckchem.com/products/e-64.html Intravenous treprostinil administration by an implantable pump is an attractive option for pulmonary arterial hypertension (PAH) treatment and is the subject of recent publications. Short-term studies are promising, but there is still a lack of long-term prospective data. We analyzed the treprostinil flow rate administered by the Lenus Pro® implantable pump in 2 patients suffering from PAH during follow-up times of respectively 4.2 and 3 years. The flow rate delivered by the pumps in these 2 patients exceeded the manufacturer admitted margin of error within 2 years and continued to increase to reach, respectively, 158 and 120% of the expected flow rate at the end of the follow up. In one case, the implantable pump had to be removed for this reason. The ex-vivo flow rate of the withdrawn pump determined in the laboratory reached 173% of the predicted value. This correlated with the in-vivo measurement, which suggests a continuous flow increase even after pump removal and without treprostinil use. Spontaneous flow increase from such an implantable pump is a potentially major pitfall, which needs to be identified and actively managed by the responsible clinicians.Purpose The present study aimed to evaluate the oncologic outcomes of patients 80 years or older compared with younger patients, and we then further investigated the efficacy of chemotherapy in individuals 80 years or older. Methods A retrospective analysis was conducted using the Surveillance, Epidemiology and End Results database. The χ2 test was used to analyze the different clinicopathologic and demographic variables between 65- and 79-year and ≥80-year groups. Kaplan-Meier analysis and log-rank testing were used to compare colorectal cancer (CRC)-specific survival (CCSS) curves between different groups. Multivariate and univariate Cox proportional hazards models with hazard ratios (HRs) and 95% confidence intervals (CIs) were also used to assess CCSS and OS.