Atsushi Sugahara

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A 60-year-old man presented with diarrhea and weight loss. Colonoscopy revealed multiple reddish polypoid lesions throughout the gastrointestinal tract and was diagnosed as Cronkhite-Canada syndrome (CCS). Prednisolone therapy caused regression of polyps. Some of them were suspected to be early colon cancers and adenomas. We endoscopically performed mucosal(More)
We aimed to clarify the lifestyle factors associated with erosive esophagitis and non-erosive reflux disease (NERD) in a Japanese population. Among 886 subjects who underwent health screening, we selected, according to their scores on the FSSG (frequency scale for symptoms of gastroesophageal reflux disease; GERD) questionnaire and the findings of upper(More)
In camera images for urban search and rescue (USAR) robots teleoperation, it is important to reduce blind spots and get surroundings as much as possible because of safety requirements. We propose a method to create synthesized bird's-eye view images from multiple fish-eye cameras as spatiotemporal data which can reduce blind spots. In practical use, it is(More)
OBJECTIVE This study aimed to assess the efficacy and tolerability of leukocytapheresis (LCAP) and to investigate predictive factors for mucosal healing and a sustained clinical response in steroid-free and steroid-refractory patients with ulcerative colitis (UC). MATERIAL AND METHODS Thirty-one steroid-free or steroid-refractory patients with active UC(More)
A 54-year-old man exhibited a pancreatic mass on abdominal ultrasonography. Diagnostic imaging with endoscopic ultrasonography, computed tomography, and magnetic resonance imaging revealed that the mass comprised various internal structures and was not connected to the pancreatic duct. Over a period of 4 years and 2 months, the mass increased from 22mm to(More)
A 54-year-old woman exhibited pancreatic calcification on abdominal ultrasonography. Diagnostic imaging revealed a 20-mm mass with a 12-mm calcification in the tail of the pancreas. The mass was weakly enhanced in the early phase of contrast-enhanced CT. We performed pancreatectomy and splenectomy. Histopathological diagnosis was a nonfunctioning pancreatic(More)
Sixty-five small colonic lesions, less than 20 mm in diameter, were studied by scanning electron microscopy (SEM). They appeared protruded or depressed colonoscopically and were excised from 35 patients by strip biopsy. As a result, crypt orifices on the mucosal surfaces of the depressed lesions were less than 10 μm in diameter. In the depressed lesions and(More)
OBJECTIVE Early cholecystectomy is currently the gold standard treatment for acute cholecystitis (AC). However, the acceptability and safety of this strategy remain in dispute. The aim of this study was to clarify the role of percutaneous transhepatic gallbladder aspiration (PTGBA) in the early management of AC in a single center. METHODS A total of 147(More)
A 60-year-old man was admitted to our department for further evaluation of main pancreatic duct dilatation detected on ultrasonography. Endoscopic retrograde cholangiopancreatography showed stenosis of the main pancreatic duct at the junction of the pancreatic head and body. Brush cytology revealed pancreatic ductal carcinoma. Histological examination of(More)