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This paper evaluates the performance of an automatic method for structural decomposition, noise removal and enhancement of bowel sounds (BS), based on the wavelet transform. The proposed method combines multiresolution analysis with hard thresholding to compose a wavelet transform-based stationary-nonstationary (WTST-NST) filter, for enhanced separation of(More)
OBJECTIVE Although various endoscopic techniques have been proved effective in treating post-cholecystectomy biliary leaks, the choice of the best method remains controversial. The aim of this prospective study was to compare the efficacy and safety of biliary stenting alone with biliary stenting plus sphincterotomy for the treatment of post-cholecystectomy(More)
BACKGROUND The role of capsule endoscopy (CE) in the diagnosis of active mild-to-moderate GI bleeding (GIB) immediately after a negative EGD and ileocolonoscopy has not been prospectively evaluated. OBJECTIVE To estimate the diagnostic yield and clinical significance of CE in patients with acute, obscure, overt, mild-to-moderate GIB. DESIGN A(More)
INTRODUCTION Despite undergoing standard endoscopic diagnostic evaluation with eosophagogastroduodenoscopy and ileocolonoscopy, up to 30% of patients with iron deficiency anemia (IDA) have no definitive diagnosis. The aim of this study was to prospectively investigate the role of wireless capsule endoscopy (WCE) in detecting lesions of the small bowel in(More)
OBJECTIVE Small bowel preparation for capsule endoscopy remains controversial. This study was conducted to compare the efficacy of 2 and 4 l of polyethylene glycol. METHODS One hundred and one patients (group A) received 2 l and 100 (group B) received 4 l in a prospective, randomized single-blind trial. To objectively evaluate enteric preparation, a(More)
OBJECTIVES Data in the literature regarding the role of endoscopic variceal ligation for the prevention of first variceal bleeding in cirrhotic patients are controversial. To further explore this issue we have compared ligation and propranolol treatment in a prospective randomized study. METHODS Sixty patients with cirrhosis and oesophageal varices with(More)
A 23-year-old man presented to the Surgery Department with acute right iliac fossa pain. Computed tomography revealed thickening of the terminal ileum. He was treated with ciprofloxacin and metronidazole with clinical improvement. One month later, he was referred to the Gastrointestinal Department for further evaluation. A slight elevation of CRP (10mg/L)(More)
Despite the fact that the association of Helicobacter pylori with an increased risk of gastric cancer is well documented, the exact mechanisms of this association have not been elucidated. Our aim was to shed some light on these mechanisms by studying the relationship of H. pylori CagA status to gastric cell proliferation and apoptosis, since both play an(More)
BACKGROUND The aim of this prospective study was to evaluate and compare the efficacy and safety of two different precutting techniques in the treatment of 103 consecutive patients with choledocholithiasis. METHODS The patients were randomized into two groups. The first group included 74 patients who underwent needle-knife fistulotomy avoiding the(More)
Wireless capsule endoscopy (WCE) is a revolutionary, patient-friendly imaging technique that enables non-invasive visual inspection of the patient's digestive tract and, especially, small intestine. However, reviewing the endoscopic data is time consuming and requires intense labor of highly experienced physicians. These limitations were the motive to(More)