1,720,964 research outputs found
Preoperative Work-up: Conventional Radiology, Ultrasonography, CT Scan, and MRI
No full textThe optimal assessment and staging of esophageal cancer (EC) is crucial as it has an important impact on patient selection with respect to appropriate treatment (surgery, neo-adjuvant therapy with or without surgery, palliative treatment) [1]. Preoperative evaluation requires knowledge of the esophageal anatomy and of the patterns of tumor spread. As mentioned in Chap. 2, the staging criteria for esophageal cancer include depth of local invasion, nodal involvement, and presence or absence of distant metastases. The various imaging modalities have different strengths and weaknesses in evaluating each of these criteria such that a combined multimodality imaging approach is usually necessary for an optimal assessment [2]
Imaging and intervention in acute pancreatic conditions.
No full textNon-traumatic pancreatic emergencies can occur as a consequence of primary pancreatic pathologies (acute and chronic pancreatitis,tumors) or secondary to interventional or surgical therap
Treatment of type II endoleaks after endovascular repair of abdominal aortic aneurysms: transcaval approach.
No full textThe purpose of the note is to describe a new technique for type II endoleak treatment, using an alternative approach through femoral venous access. Three patients who developed type II endoleak after endovascular repair of abdominal aortic aneurysm were treated with direct transcaval puncture and embolization inside the aneurysm sac. The detailed technique is described. All patients were treated without any complications and discharged 48 hours after the treatment. At 1 month follow-up the computed tomograph scan did not show a recurrence of a type II endoleak. The management of patients with type II endoleak is a controversial issue and different techniques have been proposed. We suggest an alternative technique for type II endoleak treatment. The feasibility and the advantages of this approach can offer new possibilities for the diagnosis as well as for the treatment of this complication
Endovascular treatment of arterial bleeding in patients with pancreatitis.
No full textPURPOSE: To assess the technical and clinical success of endovascular treatment of arterial bleeding in pancreatitis. MATERIALS AND METHODS: From 1992 to 2005, 28 patients with pancreatitis underwent endovascular treatment of associated arterial lesions. Fifteen patients were affected by acute pancreatitis and 13 by chronic pancreatitis. The diagnosis was obtained according to medical history and clinical and laboratory evidence of disease. Arterial involvement was diagnosed by non-invasive imaging and angiography. After treatment, all patients underwent CT scanning at a minimum of 15, 30 and 90 days. We evaluated the feasibility of embolization and patients' survival at 90 days. RESULTS: Transcatheter embolization was feasible in 26/28 patients (93\%). In 2 patients with acute pancreatitis, selective catheterization failed so we could not proceed with the angiographic approach. After treatment, there were 3/26 rebleeds (11.5\%), all of whom died within the first week. At 90 days' follow-up, 21/26 patients (81\%) were alive. Two of 26 patients (8\%) suffered splenic complications. Among the 13 patients with acute pancreatitis, 8 (61.5\%) were alive after 90 days. All 13 patients with chronic pancreatitis were alive after 90 days. CONCLUSIONS: Comparing our results with the surgical literature, we found that embolization is less invasive and, at least, as successful as surgery. Thus, it should be considered the first choice in pancreatitis arterial complications
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
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