Navegando por Palavras-chave "Colonic polyps"

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    Aspectos comuns e pseudolesões na colonografia por tomografia computadorizada: ensaio iconográfico
    (Colégio Brasileiro de Radiologia e Diagnóstico por Imagem, 2012-06-01) Atzingen, Augusto Castelli von [UNIFESP]; Tiferes, Dario Ariel [UNIFESP]; Matsumoto, Carlos Alberto [UNIFESP]; Nunes, Thiago Franchi; Maia, Marcos Vinicius Alvim Soares [UNIFESP]; D'Ippolito, Giuseppe [UNIFESP]; Universidade Federal de São Paulo (UNIFESP)
    Computed tomography colonography is a minimally invasive method for screening for polyps and colorectal cancer, with extremely unusual complications, increasingly used in the clinical practice. In the last decade, developments in bowel preparation, imaging, and in the training of investigators have determined a significant increase in the method sensitivity. Images interpretation is accomplished through a combined analysis of two-dimensional source images and several types of three-dimensional renderings, with sensitivity around 96% in the detection of lesions with dimensions equal or greater than 10 mm in size, when analyzed by experienced radiologists. The present pictorial essay includes examples of diseases and pseudolesions most frequently observed in this type of imaging study. The authors present examples of flat and polypoid lesions, benign and malignant lesions, diverticular disease of the colon, among other conditions, as well as pseudolesions, including those related to inappropriate bowel preparation and misinterpretation.
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    Colonoscopia ou sigmoidoscopia: risco de lesões isoladas no cólon direito
    (Instituto Brasileiro de Estudos e Pesquisas de Gastroenterologia - IBEPEGE Colégio Brasileiro de Cirurgia Digestiva - CBCD Sociedade Brasileira de Motilidade Digestiva - SBMD Federação Brasileira de Gastroenterologia - FBGSociedade Brasileira de Hepatologia - SBHSociedade Brasileira de Endoscopia Digestiva - SOBED, 2001-09-01) Nakao, Frank Shigueo [UNIFESP]; Cury, Marcelo De Souza [UNIFESP]; Ferrari, Angelo Paulo [UNIFESP]; Universidade Federal de São Paulo (UNIFESP)
    Background Colorectal cancer is an important cause of death in western countries. Screening methods are based on flexible sigmoidoscopy, a cheap, effective, and less painful procedure, but some important lesions on the right colon can be missed. Aim - Evaluate how many important lesions would be missed if colonoscopy indicated only for patients with distal lesions identified during flexible sigmoidoscopy. Material and Methods - All consecutive colonoscopy performed in the Endoscopy Unit of the Gastroenterology Division of Federal University of São Paulo, SP, Brazil, with polyps and cancer suspicious lesions were reviewed. Patients with a second procedure, inflammatory bowel disease or colonic surgery were excluded. Results - We reviewed 101 patients with 38 possible cancer lesions and 70 polyps. The mean age was 62 years (SD 13,7 years) and 45 were male. Forty five lesions were in the right colon, namely 23 adenomas, 10 adenocarcinomas, 1 lymphoma and 11 benign lesion. Among such lesions, 28 were isolated in the right colon (16 adenomas and 7 adenocarcinomas). Conclusion - In our study 23 patients (22,77%) had adenomas or adenocarcinomas isolated in the right colon, that would be missed if flexible sigmoidoscopy was used alone.
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    Freqüência de pólipos em doentes operados de câncer colorretal
    (Instituto Brasileiro de Estudos e Pesquisas de Gastroenterologia - IBEPEGE Colégio Brasileiro de Cirurgia Digestiva - CBCD Sociedade Brasileira de Motilidade Digestiva - SBMD Federação Brasileira de Gastroenterologia - FBGSociedade Brasileira de Hepatologia - SBHSociedade Brasileira de Endoscopia Digestiva - SOBED, 2000-01-01) Rocha, Beatriz Pinho [UNIFESP]; Ferrari, Angelo Paulo [UNIFESP]; Forones, Nora Manoukian [UNIFESP]; Universidade Federal de São Paulo (UNIFESP)
    Introduction - Epidemiologic and molecular biologic studies have already demonstrated that adenomatous colonic polyps are precancerous diseases. The main indication of the colonoscopy in the surveillance of colorectal cancer treated patients is the diagnosis and resection of adenomatous polyps. Aim - To study the frequency of adenomatous polyps after surgically resection of colorectal cancer. Material and Methods - Sixty eight patients, mean age 59 years old, with total resection of colorectal cancer, submitted to various colonoscopies during the follow up were studied retrospectively. The histological type and the characteristics of the polyp were described. Results - The frequency of polyps was 18%, being higher in the patients with more than 45 years (20%). The site of the polyps was in the left colon in 38% of the patients with cancer. The histological type of adenomas was tubular in 61%, villous in 22% and mixed in 17%. Discussion - As described by other authors, the incidence of polyps were higher after 45 years old and more than a half of them were tubular. The frequency of polyps was higher in the first two years of follow up.