186,174 research outputs found
ANASTOMOTIC DEHISCENCE IN COLORECTAL SURGERY. ANALYSIS OF 1290 PATIIENTS
No full textThe most frightening complication following colorectal surgery is the anastomotic leakage which is associated with an high mortality rate, and the analysis of risk factors for the anastomotic leak is of great interest. The aim of this retrospective study is to evaluate the risk factor for the anastomotic leakage in personal series of patients who underwent colorectal surgery. We have analyzed a consecutive series of 1290 patients who underwent colorectal open surgery from 1970 to 2004. The associations between anastomotic leak and several risk factors were studied by univariate analysis. The variables considered were the following: age; sex; type of disease; elective or emergency surgery; type of surgery; type, design and site (intra or extra peritoneal) of the anastomosis; stapled or manual anastomosis; distance from anal verge of the colorectal anastomosis; intraoperative complications; protective stoma. The rate of anastomotic leakage was 4.8% (62/1290 patients). Significant factors were: the type of surgery (higher risk after restorative proctocolectomy or rectal resection), the site extra peritoneal of the anastomosis, the type of the anastomosis (higher risk after coloanal or ileal-pouch anal or colorectal), the stapled anastomosis, the intraoperative complications. After colorectal anastomosis the risk of leakage has progressively higher for low, ultra-low and coloanal anastomosis. In these conditions a protective stoma seems to be suitable
Challenging differential diagnosis between lipoma and well-differentiated liposarcoma in the retroperitoneum. A case report
No full textLiposarcomas are the most common type of sarcomas arising in the retroperitoneum. Retroperitoneal lipomas are extremely rare. They should be distinguished from well-differentiated liposarcomas in order to provide the appropriate treatment. A 53-years-old male was admitted with the presence of a palpable mass in the upper abdomen. Contrast enhanced computerized tomography (CT) of the abdomen and pelvis showed a 20x12 cm mass arising in the retroperitoneum and inglobing the celiac and superior mesenteric trunks. Because of unresectability an open surgical biopsy was performed. Histological examination showed the presence of adipose tissue with diffuse liponecrosis without definitive features of neoplasia. At six-month follow-up a CT documented an increase of the tumor to 22x13 cm. The mass was stable at the CT, performed at 1-year follow-up. Given the impossibility to distinguish well-differentiated liposarcomas from lipomas and the in the present case of unresectable retroperitoneal mass, an observational follow-up was a justified
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
Indications to restorative proctocolectomy in ulcerative colitis: immediate and long-term results in “high-risk” patients
No full textGoing Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Results after restorative proctocolectomy: Comparison between ileal pouch-anal anastomosis with and without muosectomy
No full textExtended resection in the treatment of colorectal cancer.
No full textBetween 1975 and 1990, 525 patients underwent resection of colorectal cancer in our unit. Of these, 38 had tumour invading adjacent structures and underwent an extended resection. Overall, there were 67 cases treated palliatively. Of these, three were in the group of 38 having an extended resection. When the groups of radical not extended (n = 423) and radical extended resections (n = 35) were compared, respective values for mortality (1.9% vs 0) and morbidity (12.8% vs 11.3%) were not different. Respective local recurrence rates (13% vs 26%) were significantly greater after extended resection. Five-year survival after extended resection was 30%, no different from the general survival rate for standard resections for T2-3 node-positive tumours. Extended resection is thus a safe and important approach for locally advanced tumours
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