Endoscopy
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Randomized Controlled Trial Comparative Study Clinical Trial
A prospective randomized trial comparing a virtual reality simulator to bedside teaching for training in sigmoidoscopy.
Clinical investigation using endoscopy simulators is now possible due to recent advances in virtual reality technology. A prospective randomized trial was conducted to compare the exclusive use of a virtual reality endoscopy simulator with bedside teaching for training in sigmoidoscopy. ⋯ The use of a state-of-the-art virtual reality-based endoscopy simulator is inferior to traditional bedside teaching techniques when used exclusively for training medical residents to perform sigmoidoscopy.
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In 1981, the authors introduced balloon catheter dilation for postoperative gastric outlet stenosis and later for peptic, corrosive and postvagotomy gastric outlet stenosis. This retrospective study evaluates the effectiveness, safety and outcome of balloon catheter dilation in these various indications. ⋯ Balloon catheter dilation is an important and effective diagnostic and therapeutic method; depending on the causative factor, it can make surgery unnecessary in nearly 70% of patients with benign gastric outlet stenosis.
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Case Reports
Recurrent nonvariceal upper gastrointestinal bleeding in a patient with gastroduodenal schistosomiasis.
In this case report, we describe the rare situation of a patient with nonvariceal upper gastrointestinal bleeding induced by gastric and duodenal involvement of Schistosoma mansoni infection. In this unique case severe, recurrent upper gastrointestinal bleeding was induced by central ulcerations of gastric pseudopolypoid and duodenal polypoid lesions. ⋯ Neither anti-ulcer therapy nor endoscopic hemostasis methods were effective in preventing recurrent bleeding episodes. Finally, typical histological and serological tests (positive for S. mansoni hemagglutination) led to the correct diagnosis, and the patient was completely cured by specific antischistosomal therapy.