Néstor Landoni

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INTRODUCTION Endoscopic sphincterotomy (ES) is commonly used to remove bile-duct stones and to treat other problems. We prospectively investigated complications and mortality of endoscopic retrograde cholangiopancreatography (ERCP). PATIENTS AND METHODS Between june 6, 1998 and june 6, 1999 553 ERCP were performed in our centers. Inclusion criteria for(More)
BACKGROUND Cancer of the esophagus and gastric cardia cause progressive dysphagia. Half of patients are not amenable to surgical resection; of those who are, about 20% will suffer either from local recurrence or anastomotic strictures. Self-expandable metallic stents of diverse characteristics have been used in these clinical conditions. However, expandable(More)
Malignant gastric outlet obstruction is a complication of advanced pancreatic cancer, manifesting endoscopically or radiographically as a stricture of the proximal duodenum. Until recently, management consisted of surgical gastroenteric bypass with or without associated biliary bypass. Over the past decade, the endoscopic deployment of self-expanding metal(More)
The prevalence of pre-cancerous lesions of the oesophagus and their association with alcohol and tobacco were examined in an endoscopic survey carried out in La Plata, Argentina. The study included 406 subjects over 15 years of age attending several gastroenterology clinics because of various gastrointestinal symptoms. Among males, the prevalence rates of(More)
In nine patients with histological diagnosis of alcoholic hepatitis, in-situ deposition of autologous immunoglobulins (IgG, Iga, IgM) were investigated by inmmuno fluorescent techniques (IF). In three patients a linear fluorescent pattern was seen on the sinusoidal walls. The bound inmunoglobulins could be eluted by treatment with low pH buffers. In the(More)
Between April 1981 and April 1991, there were 547 EPT performed, seventy-five of which had in situ gall bladder. They were performed in two groups, who were similar from the technical-anatomical point of view, and sociocultural background. The early morbidity showed 31 complications (5.6%). The most frequent ones were:perforation in 8 cases and haemorrhage(More)
UNLABELLED The aim of this paper is to compare the efficiency between standard plastic stents and polyurethane stents used in biliary tract malignant obstruction. The main problem of the plastic prosthesis is their early occlusion. On the other hand there is the hypothesis that due to the less porousness of the polyurethane surface, there might be lesser(More)
The endoscopic or percutaneous placement of a stent in the palliative treatment of the malignant obstructions of the biliary tract is a very well established and accepted method in our country. In the last few years the placement of metallic stents has been preconized because they offer advantage over the standard ones. The first three cases where this type(More)
OBJECTIVES:Biliary brushing during endoscopic retrograde cholangiography (ERC) may allow the diagnosis of cancer, but this technique is limited by a low (18–57%) sensitivity. We compared the cellular and diagnostic yields of a new sampling method (using stricture dilation and a grasping basket) with those of brushing.METHODS:Sixty consecutive patients with(More)
In 60 patients with either non operable esophageal pathology on neighbouring organs pathology with esophageal involvement, esophageal endoprosthesis therapy was assessed. The various implantation techniques are described. Main causes for implantation were epidermoid esophageal carcinoma in 48 instances and gastric adenocarcinoma with esophageal involvement(More)