1,720,979 research outputs found

    Carcinoma of the head of the pancreas: review of 67 cases and comparison with 27 additional periampullary carcinomas

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    Carcinoma of the head of the pancreas is reported with increasing incidence. The classical Whipple procedure, modified by Traverso and Longmire, is a major surgical undertaking and there is question on its indication in the case of lesions which, although technically resectable, are not susceptible to cure

    L'ernioalloplastica con protesi preperitoneale per via inguinale anteriore in anestesia locale. Tecnica personale

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    Background. The most common surgical techniques for the repair of groin hernias need the positioning of a mesh over the fascia trasversalis or in the preperitoneal space. The advantages of Lichtenstein, Gilbert or Trabucco's anterior access techniques are essentially due to the simple execution, even in local anesthesia, and to the shorter and less painful postoperative course. Preperitonal techniques of Stoppa, Wantz and Rives are certainly more complex, but allow a complete reconstruction of the fascia trasversalis, since the mesh is positioned in the preperitoneal space. Methods. Trying to match the simplicity of the anterior repair techniques and the safety offered by a wide preperitoneal mesh, the authors described a new technique that allow preperitoneal hernioalloplasty by a classical anterior access. Results and conclusions. This method is different from the Rives' technique, since the shape, the size and the material of the mesh is different and it is performed under local anesthesia. These patterns allow a simple execution of the technique and a fast postoperative recovery with a better comfort, adding the advantages of the classic anterior repairs to those of the preperitoneal hernioalloplasties

    Improvement of colo-rectal cancer surgery following introduction of endoscopical approach

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    In the period 1968-1993, we treated 399 patients for colorectal cancer. Up to 1980, preceding large scale use of endoscopy, 217 patients, out of the group of 399, were submitted to surgery; at time of diagnosis all patients had symptoms of advanced colonic tumor (intestinal obstruction; palpable mass; significant rectal bleeding); none of the lesions detected was in Dukes A or B1 groups; 56 patients were in Dukes B2 and stages C1 + C2 + D were detected in 161 cases. In period 1981-1993 we treated 182 patients; in all cases the diagnosis consisted of endoscopical examinations. Out of this group 69 patients underwent endoscopic resection of polyps with focal neoplastic degeneration: 44 did not require surgery according to Haggitt criteria. In the group of 138 patients who underwent surgery, 89 were in Dukes A + B1 + B2 groups and 49 were in Dukes C1 + C2 + D groups. In our experience endoscopy is not essential in the clear cut colonic neoplasms, however it is an invaluable screening test in early stages, in poor symptomatic population, in elderly patients (>50 y.o.) and in patients with non specific symptoms. We wish to emphasize how endoscopy has improved the results of colonic cancer surgery

    [Total versus partial pancreatectomy in the surgical treatment of carcinoma of the pancreatic head]

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    This is a review of the recent advances in total pancreatectomy versus regional pancreatectomy for adenocarcinoma of the head of the pancreas. The rationale for total pancreatectomy comes from a tendency for pancreatic cancer to be multicentric, the absence of the pancreatico-enterostomy and the argument that total pancreatectomy is a better cancer procedure (wider lymphadenectomy and soft tissue resection). In spite of these theoretical advantages, any important impact on morbidity, mortality and ultimately on survival has not been realised. We analyse the principal metabolic and functional sequelae of total pancreatectomy, particularly highlighting the importance of glucagone hormone in maintaining correct blood glucose levels. The data suggest, a tendency to use total pancreatectomy in selected patients on the basis of pre- and intraoperative cytodiagnosis to prevent occult neoplasms in the pancreatic remnant

    Going Beyond Counting First Authors in Author Co-citation Analysis

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    The present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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