نتایج جستجو برای: colonic polyps
تعداد نتایج: 35517 فیلتر نتایج به سال:
Ras gene family (c-Ha, Ki, N ras) and c-myc proto-oncogenes were analyzed in seven colonic and three gastric adenomatous polyps obtained from a patient with Turcot's syndrome. The rearrangement and amplification as well as overexpression of c-Ha ras gene in one colonic adenomatous polyp were determined. The amplified c-Ha ras gene in this polyp revealed larger fragments of BamHI, PstI and SacI ...
Profile of colorectal polyps: a retrospective study from King Fahad Hospital, Madinah, Saudi Arabia.
AIM To evaluate the predominant colorectal polyps in the Almadinah region of Saudi Arabia. MATERIALS AND METHODS In this iretrospective study, we analyzed pathology reports of colonoscopies performed in King Fahad Hospital, Madinah, Saudi Arabia during the period 2006 to 2013. Data based on patient age, gender, size, site and type of polyps and the degree of dysplasia were analyzed by softwar...
Decreased production of butyric acid by colonic carbohydrate fermentation may predispose to colonic carcinogenesis, with the implicit assumption that the decrease in faecal butyrate found predates the development of the tumour. The influence of the genetic predisposition to colonic tumours and the presence of colonic polyps on in vitro fermentation of carbohydrates was examined. Stool samples f...
This study compared the size, histology and morphology of coexisting neoplastic polyps found in colonoscopy, and evaluated the clustering of these polyps in patients with either colorectal carcinoma, cancerous polyps or benign adenomas. Patients were divided by their most malignant form of neoplasia: Group A included 58 patients with early invasive cancerous polyps, and Group B included 73 pati...
OBJECTIVE To scrutinize all colonic biopsies and document the prevalence and pattern of various colonic diseases amongst the patients presenting at a tertiary care hospital of Western Saudi Arabia. METHODS We examined the record of all colonic biopsies, processed at Histopathology Department of King Abdul Aziz University Hospital; Jeddah from January 2002 to July 2007. RESULTS The colonic b...
BACKGROUND Biopsy and polypectomy frequently are performed for lesions that carry a low risk of malignant transformation in the colon. Elastic scattering spectroscopy (ESS) is a novel optical biopsy technique that can distinguish, almost instantaneously, between normal and abnormal tissue in vivo, without the need to remove tissue. We assessed the diagnostic potential of ESS in the colon to dif...
BACKGROUNDS The efficacy of clipping for preventing the delayed bleeding after the removal of colon polyps is still controversial. In order to clarify this efficacy, a randomized controlled study was performed. METHODS One hundred and fifty-six patients with colon neoplasms (288 lesions) were enrolled in the study. The patients were randomly divided into two groups: clipping or nonclipping gr...
BACKGROUND i-Scan is a novel virtual chromoendoscopy system designed to enhance surface and vascular patterns to improve optical diagnostic performance. Numerous prospective studies have been done to evaluate the accuracy of i-Scan in differentiating colonic neoplasms from non-neoplasms. i-Scan could be an effective endoscopic technique for optical diagnosis of colonic polyps. OBJECTIVE Our a...
PURPOSE The present study aimed to determine the prevalence of MUTYH mutations in patients with multiple colonic polyps and to explore the best strategy for diagnosing MUTYH-associated polyposis (MAP) in these patients. EXPERIMENTAL DESIGN This study included 405 patients with at least 10 colonic polyps each. All cases were genetically tested for the three most frequent MUTYH mutations. Whole...
BACKGROUND AND AIM Delayed colonic postpolypectomy bleeding is the commonest serious complication after polypectomy. This study aimed to utilize massive sampling data of polypectomy to analyze risk factors for delayed postpolypectomy bleeding. PATIENTS AND METHODS The endoscopic data of 5600 patients with 15553 polyps removed (2005 to 2013) were analyzed retrospectively through univariate ana...
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