1,721,123 research outputs found

    Venting direct percutaneous jejunostomy (DPEJ) for drainage of malignant bowel obstruction in patients operated on for gastric cancer

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    Abstract Malignant chronic bowel obstruction (MCBO) is a syndrome caused by abdomen-pelvic diffusion of neoplastic diseases of any origin. It generally occurs in an advanced disease, affecting 3–15% of patients recently operated, untreated, or submitted to radiotherapy. Patients complain of chronic pain and vomitus. The approach to this problem is multidisciplinary, involving the surgeon, the endoscopist, the oncologist, and the pain-therapy expert. Direct percutaneous jejunostomy (DPEJ) using a percutaneous endoscopic gastrostomy (PEG) tube is a jejunal percutaneous access procedure indicated for nutrition in those patients whose stomach cannot be used, as in cases of partially or totally gastrectomized ones. A venting PEG or percutaneous endoscopic jejunostomy (PEJ) is a solution to drain the gastrointestinal tract for MCBO even in difficult cases represented by patients with previous abdominal surgery, those with partial or total gastrectomies, ascites, or peritoneal carcinosis. We report our five-case experience of draining an MCBO in patients previously operated on for gastric cancer, using a DPEJ technique that we believe is the best technique for this purpose

    Massive mesenteric ischaemia resulting from giant strangulated umbilical hernia – a case report

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    Hernia repair is the most commonly practiced operation in the departments of surgery in developed countries. Huge abdominal hernias are uncommon in western civilization. We present a rare case of a 73-year-old woman with a diagnosis at admission of intestinal obstruction caused by a giant strangulated umbilical hernia. At the clinical and radiological examination, the patient showed an enormous strangulated umbilical hernia with acute abdomen, atrial fibrillation, and pulmonary subedema. Emergency laparotomy showed a huge peritoneal umbilical sac containing massive mesenteric ischemia starting from 40 cm after the Treitz ligament and extended to the right colonic flexure. A near-total resection of the small bowel, a right colectomy with double terminal stomas, and a direct hernia repair without prosthetic mesh were performed. Twenty days after the operation, the patient was discharged and begun domiciliary total parenteral nutrition, and 24 months after surgical treatment she is still alive

    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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