Results 1 - 10 of 4373
Results 1 - 10 of 4373. Search took: 0.031 seconds
|Sort by: date | relevance|
[en] We report a unique anomalous renal venous drainage on a 25-year-old man who had congenital absence of the right renal vein and an aberrant venous drainage through the lower pole of the kidney into the inferior vena cava. To our knowledge, this anomaly has not been previously reported in the peer-reviewed literature. State-of-the-art imaging findings are presented.
[en] The Tinto and Odiel rivers are heavily affected by acid mine drainage from mining areas in the Iberian Pyrite Belt. In this work we have conducted a study along these rivers where surface water samples have been collected. Field measurements, total dissolved metals and Fe and inorganic As speciation analysis were performed. The average total concentration of As in the Tinto river (1975 μg L-1) is larger than in the Odiel river (441 μg L-1); however, the mean concentration of As(III) is almost four times higher in the Odiel. In wet seasons the mean pH levels of both rivers (2.4 and 3.2 for the Tinto and Odiel, respectively) increase slightly and the amount of dissolved total arsenic tend to decrease, while the As(III)/(V) ratio strongly increase. Besides, the concentration of the reduced As species increase along the water course. As a result, As(III)/(V) ratio can be up to 100 times higher in the lower part of the basins. An estimation of the As(III) load transported by both rivers into the Atlantic Ocean has been performed, resulting in about 60 kg yr-1 and 2.7 t yr-1 by the Tinto and Odiel rivers, respectively. - Total arsenic concentration decreases along the water basins, however the As(III)/(V) ratio increases
[en] Purpose: We report our technique for and results of percutaneous treatment of heterogenous, predorninantly solid echopattem hepatic hydatid cysts (HHC), i.e., complex type IV cysts according to Gharbi's sonographie Classification of HHC.Methods: Eight patients with nine complex type IV HHC were treated by percutaneous aspiration followed by hypertonic saline ablation, using a 14 Fr van Sonnenberg sump drainage catheter under Sonographie and fluoroscopic guidance.Results: Successful drainage of cysts contents was achieved in all eight patients. No major complications, such as anaphylaxis, abdominal dissemination, cyst recurrence, or death. oecurred. Minor complications including pain (n=4), mild fever (n=5), right reactive pleural effusion (n=4), and transient hypernatremia (n=2) vvere observed and managed conservatively. Follow-up imaging studies for an average period of 15 months (range 1-48 months) showed either complete healing (n=3) or significant reduetion in the size of the cyst with solidification (n=6).Conclusion: Nine complex type IV HHC were effectively treated by suction of the membranes and hypertonic saline ablation using a 14 Fr sump drainage catheter, without major complications.
[en] Highlights: ► Coal mine drainage sludge can effectively neutralize and treat the acidic drainage for a long time. ► We suggest that the continuous pilot system having CMDS can not only high removal efficiencies, but also high total rates for all heavy metals. ► The pilot system can have a much higher Zn(II) loading rate than other referenced systems such as wetland coupled with algal mat and anoxic limestone drain. - Abstract: A series of pilot-scale tests were conducted with a continuous system composed of a stirring tank reactor, settling tank, and sand filter. In order to treat acidic drainage from a Pb–Zn mine containing high levels of heavy metals, the potential use of coal-mine drainage sludge (CMDS) was examined. The pilot-scale tests showed that CMDS could effectively neutralize the acidic drainage due to its high alkalinity production. A previous study revealed that calcite and goethite contained in CMDS contributed to dissolutive coprecipitation and complexation with heavy metals. The continuous system not only has high removal efficiencies (97.2–99.8%), but also large total rate constants (Ktotal, 0.21–10.18 h−1) for all heavy metals. More specifically, the pilot system has a much higher Zn(II) loading rate (45.3 g m−3 day−1) than other reference systems, such as aerobic wetland coupled with algal mats and anoxic limestone drains. The optimum conditions were found to be a CMDS loading of 280 g L−1 and a flow rate of 8 L day−1, and the necessary quantity of CMDS was 91.3 g L−1 day−1, as the replacement cycle of CMDS was determined to be 70 days.
[en] The insertion of a chest drain catheter for the management of a pneumothorax in an 82-year-old woman resulted in the unusual complication of liver penetration. The position of the drain was assessed by contrast-enhanced computed tomographic scan. Because the patient was hemodynamically stable and no damage to major vessels was seen on computed tomographic scan, the patient was treated in a nonoperative manner. A procedure was performed under controlled conditions using techniques used during transhepatic liver biopsies but with the addition of a balloon catheter. Embolization of the liver track was performed during chest drain removal. The drain was successfully removed without the complication of bleeding in a patient unsuitable for a general anesthetic.
[en] PurposeWe aimed to evaluate the long-term efficacy of percutaneous management of non-anastomotic biliary stenosis after liver transplantation, using plastic internal biliary stents.Materials and MethodsThis study included 35 cases (28 men, 7 women; mean age: 52.09 ± 8.13 years, range 34–68) in 33 patients who needed repeated interventional procedures because of biliary strictures. After classification of the biliary strictures, we inserted percutaneous biliary plastic stents through the T-tube or percutaneous transhepatic biliary drainage tracts. Stents were exchanged according to percutaneous methods at regular 2- to 6-month intervals. The stents were removed if the condition improved, as observed on cholangiogram as well as based on clinical findings. The median patient follow-up period after initial diagnosis and treatment was 6.04 years (range 0.29–9.95 years). We assessed treatment success rate and patient and graft survival times.ResultsDuring the follow-up period, 14 patients (14/33, 42.42 %) were successfully treated and were tube-free. The median tube-free time, time without a stent, was 4.13 years (range 1.00–9.01). In contrast, internal plastic stents remained in 9 patients (9/33, 27.27 %) until the last follow-up. These patients had acceptable hepatic function. Among the remaining 10 patients, 3 (3/33, 9.09 %) were lost to regular follow-up and the other 7 (7/33, 21.21 %) patients died. The overall graft loss rate was 20.0 % (7/35). The median time from initial treatment to graft loss was 1.84 years (range 0.42–4.25).ConclusionsPercutaneous plastic stents placement is technically feasible and clinically useful in patients with multiple biliary stenoses following liver transplantation.