Search results for "Opera"
showing 10 items of 8665 documents
The percentage of free prostate-specific antigen does not predict extracapsular disease in patients with clinically localized prostate cancer before …
2001
Objective To determine whether the percentage of free/total prostate-specific antigen (f/tPSA) can predict the pathological features in patients with clinically localized prostate cancer before radical prostatectomy. Patients and methods Univariate and multivariate logistic regression was used to analyse data from 171 untreated patients who underwent radical prostatectomy. Variables included the total PSA (tPSA), fPSA, f/tPSA, biopsy Gleason score, clinical stage and patient age. Results In 115 patients with pathologically organ-confined tumours ( pT2N0) the mean (sd) tPSA value was 6.9 (5.6) ng/mL; in 56 patients with extracapsular disease ( pT3pN0/N+) it was 10.2 (7.6) ng/mL; the respecti…
Randomized clinical trial comparing liver resection with and without perioperative assessment of liver function
2018
Background Liver function tests may help to predict outcomes after liver surgery. The aim of this study was to evaluate the clinical impact on postoperative outcome and patient management of perioperative liver function testing using the LiMAx® test. Methods A multicentre RCT was conducted in six academic liver centres. Patients with intrahepatic tumours scheduled for open liver resection of at least one segment were eligible. Patients were randomized to undergo additional perioperative liver function tests (LiMAx® group) or standard care (control group). Patients in the intervention arm received two perioperative LiMAx® tests, one before the operation for surgical planning and another afte…
Results of endoscopic retroperitoneal adrenalectomy
1996
Background: From March 1994 to August 1995 we performed extraperitoneal endoscopic adrenalectomy in 18 patients with adrenal gland tumors. Methods: Two of these patients underwent bilateral adrenalectomy. For the extraperitoneal approach a pneumoret-roperitoneum was established and three 10-mm trocars were inserted in the area of the conventional flank incision. Adrenalectomy was performed via these ports. Endoscopic retroperitoneal adrenalectomy was successful in 15 patients; three patients required a conventional operation via an extraperitoneal lumbar approach because of inadequate exposure of the adrenal gland. In patients with endoscopic retroperitoneal adrenalectomy median operative t…
Stump appendicitis. A case report
2016
Highlights • Stump appendicitis (SA) is a rare, but noteworthy, diagnosis that warrants early detection. • Delay in the diagnosis of SA may result in serious complications like stump gangrene, perforation and peritonitis. • More research is needed to identify strategies to prevent SA. • We underline the emergent role of lower endoscopy to clarify diagnosis resolve the symptoms. • Surgeons need to have a heightened awareness of the possibility of SA.
Peut-on proposer un prélèvement du ganglion sentinelle en cas de chimiothérapie néoadjuvante dans les cancers du sein et à quel moment ?
2016
The main goal of preoperative chemotherapy is to reduce the size of the tumor and allow conservative treatment. Neoadjuvant treatment can affect axillary status with a downstaging in one third of the cases. For these patients, the benefit of axillary node dissection is questioned and the sentinel node biopsy (SLNB) seems to be a relevant option. However, the timing of performing SLNB is still debated especially for clinical negative patients with negative axillary ultrasound before preoperative chemotherapy. For axillary positive nodes proved by biopsy/cytology before preoperative chemotherapy, SLNB can be an option if there is a good clinical and radiological response.
Intravascular Ultrasound-based Imaging Modalities for Tissue Characterisation
2014
Atherosclerosis is the leading cause of cardiovascular mortality and morbidity in the developed world. Intravascular ultrasound (IVUS) is a widely used imaging modality providing complementary diagnostic information to angiography regarding the vessel wall of the coronary arteries. IVUS has been used for assessment of ambiguous angiographic lesions, evaluation of new interventional devices and in atherosclerosis progression-regression trials. However, the standard gray-scale IVUS has limited value for the accurate identification of specific plaque components. This limitation has been partially over- come by introduction of new IVUS-based imaging methods such as: virtual histology IVUS, iMAP…
A Bifurcation with Surprise
2016
FFR was assessed after provisional stenting of a bifurcation stenosis in the proximal LAD in a very young patient. Pull-back demonstrated a good outcome after PCI, and it revealed the existence of an additional stenosis which, due to its very proximal location in the LAD, could not be seen at angiography. This case emphasizes the importance of performing FFR measurements during sustained hyperemia and using a slow pull-back technique.
Video-Assisted Navigation for Adjustment of Image-Guidance Accuracy to Slight Brain Shift
2015
Background Information supplied by an image-guidance system can be superimposed on the operating microscope oculars or on a screen, generating augmented reality. Recently, the outline of a patient's head and skull, injected in the oculars of a standard operating microscope, has been used to check the registration accuracy of image guidance. Objective To propose the use of the brain surface relief and superficial vessels for real-time intraoperative visualization and image-guidance accuracy and for intraoperative adjustment for brain shift. Methods A commercially available image-guidance system and a standard operating microscope were used. Segmentation of the brain surface and cortical bloo…
Can Early Postoperative O-(2-18FFluoroethyl)-l-Tyrosine Positron Emission Tomography After Resection of Glioblastoma Predict the Location of Later Tu…
2019
Objective Glioblastoma inevitably recurs despite aggressive therapy. Therefore, it would be helpful to predict the location of tumor recurrence from postoperative imaging to customize further treatment. O-(2-18Ffluoroethyl)- l -tyrosine (FET) positron emission tomography (PET) might be a helpful technique, because tumor tissue can be differentiated from normal brain tissue with high specificity. Methods Thirty-two consecutive patients with perioperative and follow-up imaging data available were included. On postoperative FET-PET, the tumor/normal brain (TTB) ratio around the resection cavity borders was measured. Increased TTB ratios were recorded and anatomically correlated with the site o…
Angiographic follow-up results of a randomized study on angioplasty versus bypass surgery (GABI Trial)
1996
Although several randomized trials have been performed to compare the outcomes of percutaneous transluminal coronary angioplasty (PTCA) and coronary artery bypass surgery (CABG) in patients with multivessel disease, there is little data available on angiographic follow-up results. The present substudy of the German angioplasty versus bypass surgery investigation (GABI Trial) compares the angiographic revascularization status in these two cases 6 months after treatment. Follow-up angiograms were available in 102 CABG patients and 117 PTCA patients. Although the protocol excluded patients with total occlusion, on follow-up 6 months after treatment we found total occlusion of 94 native arterie…