Search results for "STAGE"
showing 10 items of 1393 documents
Thrombendarteriektomie bei chronischer thromboembolischer pulmonaler Hypertonie: Hämodynamik und Rechtsherzfunktion im Langzeitverlauf
2008
OBJECTIVE To find out whether pulmonary thromboendarterectomy (PTE) can achieve lasting reduction of pulmonary vascular resistance in patients with pulmonary arterial hypertension due to chronic thromboembolism. PATIENTS AND METHODS 45 patients (25 women, 20 men; mean age 45 +/- 24 [19-67] years) were re-investigated a mean of 21 (13-32) months after successful PTE. Two patients had then been in New York Heart Association (NYHA) stage II, 26 in stage III, and 17 in stage IV. In addition to clinical examination and chest radiogram 36 patients had right heart catheterization, 28 pulmonary angiography and 44 echocardiography. RESULTS Definite improvement of symptoms had occurred in all. 34 wer…
Advanced Endoscopic Imaging Methods
2021
Endoscopic imaging is the mainstay of gastrointestinal endoscopy and has experienced remarkable improvements in recent decades. Further endoscopic innovations stemming from major technological advances such as artificial intelligence and deep learning are at advanced stages of development and will be increasingly deployed in routine clinical practice. These will improve the detection and enable real-time optical diagnosis of pathologies in the gastrointestinal tract. Furthermore, the utilization of endoscopic robots may result in higher diagnostic yield and greater patient comfort. This chapter covers the most recent developments around computer-assisted diagnosis, hypoxia and three-dimensi…
Zonal Segmentation of Prostate T2W-MRI using Atrous Convolutional Neural Network
2019
The number of prostate cancer cases is steadily increasing especially with rising number of ageing population. It is reported that 5-year relative survival rate for man with stage 1 prostate cancer is almost 99% hence, early detection will significantly improve treatment planning and increase survival rate. Magnetic resonance imaging (MRI) technique is a common imaging modality for diagnosis of prostate cancer. MRI provide good visualization of soft tissue and enable better lesion detection and staging of prostate cancer. The main challenge of prostate whole gland segmentation is due to blurry boundary of central gland (CG) and peripheral zone (PZ) which lead to differential diagnosis. Sinc…
Colonoscopy, Tumors, and Inflammatory Bowel Disease - New Diagnostic Methods
2006
Accurate detection of premalignant lesions and early cancers in the colon is essential for curative endoscopic or surgical therapy, since the prognosis for the affected patients is closely related to the size and stage of the neoplastic lesion. Total colonoscopy is the accepted gold standard for screening and surveillance of colorectal cancer. This review summarizes recently published diagnostic developments and key findings in the areas of colonoscopy, colonic tumors, and inflammatory bowel diseases. Relevant findings have been reported for chromo-endoscopy in the diagnosis of colitis-associated neoplasia, as well as flat and depressed adenomas. Real-time Doppler capabilities have now been…
Sistema inteligente para protocolizar el diagnóstico de invasión ganglionar en el cáncer de laringe
2002
Laryngeal carcinoma is the most frequent malignant tumour in head and neck. Node invasion is known to be one of the most important prognostic factors. The aim of this study has been to design an intelligent system to perform a diagnostic algorithm of metastasic neck nodes. 122 clinical reports of patients diagnosed of laryngeal carcinoma in our department have been reviewed. The compiled data have been: tumor site, T stage, N stage (clinical, after CT scan and post-surgery). The method used to design the intelligent system has been the ID3, which is able to generate a minimal decision tree. Palpation has been the variable that has given more information about node invasion. CT has proved to…
El uso precoz de la tomografía computarizada en el manejo de la diverticulitis aguda
2007
Objetivo: valorar el uso precoz de la tomografía computarizada (TC) para el diagnóstico, estadificación y manejo de la diverticulitis aguda. Material y métodos: realizamos un estudio prospectivo de 102 pacientes con el diagnóstico clínico de diverticulitis aguda de colon izquierdo. La diverticulitis aguda fue inicialmente dividida en tres estadios. Los pacientes fueron reestadiados en los estadios I, IIa, IIb y III de acuerdo a los hallazgos encontrados en la TC. El diagnóstico se confirmó después intraoperatoriamente, por colonoscopia o estudio con bario. Resultados: fueron incluidos 102 pacientes (52 mujeres y 50 hombres) con una edad media de 59,4 (DS ± 14,96). En 84 (82,35%) paci…
Liver intravoxel incoherent motion (IVIM) magnetic resonance imaging: a comprehensive review of published data on normal values and applications for …
2017
A comprehensive literature review was performed on liver intravoxel incoherent motion (IVIM) magnetic resonance imaging (MRI) technique and its applications. Heterogeneous data have been reported. IVIM parameters are magnetic field strength dependent to a mild extent. A lower Dslow (D) value at 3 T than at 1.5 T and higher perfusion fraction (PF) value at 3 T than at 1.5 T were noted. An increased number of b values are associated with increased IVIM parameter measurement accuracy. With the current status of art, IVIM technique is not yet capable of detecting early stage liver fibrosis and diagnosing liver fibrosis grades, nor can it differentiate liver tumors. Though IVIM parameters show p…
Response-based chemotherapy and involved field radiation for intermediate stage Hodgkin disease. A GISL/NHLSG trial.
2006
Abstract Background. Most of the patients with advanced stage Hodgkin lymphoma can be cured with a standard course of six cycle of ABVD chemotherapy plus involved field (IF)radiotherapy. Patients with less advanced stage or with a more responsive disease could possibly achieve a cure with a shorter course of chemotherapy. In 1992, in the pre-PET era, the GISL addressed the issue of the proper number of chemotherapy cycles planning a response-oriented, ABVD-based study for intermediate-stage Hodgkin’s lymphoma patients. Patients and Methods. From January 1992 to December 2002, 218 patients younger than 70 were enrolled. Eligible patients had histologically confirmed and clinically staged Hod…
Medical treatment for inoperable malignant bowel obstruction: a qualitative systematic review.
2007
The use of symptomatic agents has greatly improved the medical treatment of advanced cancer patients with inoperable bowel obstruction. A systematic review of studies of the most popular drugs used in the medical management of inoperable malignant bowel obstruction was performed to assess the effectiveness of these treatments and provide some lines of evidence. Randomized trials that involved patients with a clinical diagnosis of intestinal obstruction due to advanced cancer treated with these drugs were reviewed. Five reports fulfilled inclusion criteria. Three studies compared octreotide (OC) and hyoscine butylbromide (HB), and two studies compared corticosteroids (CSs) and placebo. Globa…
Minimally Invasive Approaches in Locally Advanced Cervical Cancer Patients Undergoing Radical Surgery After Chemoradiotherapy: A Propensity Score Ana…
2020
Abstract Purpose Chemoradiation (CT/RT) followed by radical surgery (RS) may play a role in locally advanced cervical cancer (LACC) patients with suboptimal response to CT/RT or in low-income countries with limited access to radiotherapy. Our aim is to evaluate oncological and surgical outcomes of minimally invasive radical surgery (MI-RS) compared with open radical surgery (O-RS). Patients and Methods Data for stage IB2–IVA cervical cancer patients managed by CT/RT and RS were retrospectively analyzed. Results Beginning with 686 patients, propensity score matching resulted in 462 cases (231 per group), balanced for FIGO stage, lymph node status, histotype, tumor grade, and clinical respons…