Publicação
Colonografia por tomografia computorizada : colonoscopia virtual a evidência actual
| Resumo: | Colorectal Cancer (CRC) constitutes the second cause of cancer death in Europe. CRC screening lowers its mortality. CT colonography/virtual colonoscopy (CTC/VC) is a recent method for CRC screening. This is a non invasive technique, with a minimum risk of complications, and specificity and sensitivity similar to optical colonoscopy. However, its worldwide use as a screening method for CCR remains controversial, although it is recommended by the American guidelines. Even so, some doubts have been raised on this exam, namely, radiation exposition, its cost effectiveness, population adhesion and the meaning of the incidental extra colonic findings, which will be reviewed in this article. So far, the radiology service in Santa Maria Hospital has performed 30 CTC/VC exams. These exams had in general, an appropriate preparation and distention of the colon. They resulted in the detection of four cases with polyps above 5mm (cut off of clinical relevance), one polyp > 10mm and 2 neoproliferative lesions. The extra-colonic findings were mainly liver and kidney cysts, atherosclerotic disease of the abdominal aorta and hiatus hernias. |
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| Autores principais: | Morgado, Maria Francisca Jácome |
| Assunto: | Colonografia tomográfica computadorizada Diagnóstico por imagem Cancro colo-retal |
| Ano: | 2014 |
| País: | Portugal |
| Tipo de documento: | dissertação de mestrado |
| Tipo de acesso: | acesso restrito |
| Instituição associada: | Universidade de Lisboa |
| Idioma: | português |
| Origem: | Repositório da Universidade de Lisboa |
| Resumo: | Colorectal Cancer (CRC) constitutes the second cause of cancer death in Europe. CRC screening lowers its mortality. CT colonography/virtual colonoscopy (CTC/VC) is a recent method for CRC screening. This is a non invasive technique, with a minimum risk of complications, and specificity and sensitivity similar to optical colonoscopy. However, its worldwide use as a screening method for CCR remains controversial, although it is recommended by the American guidelines. Even so, some doubts have been raised on this exam, namely, radiation exposition, its cost effectiveness, population adhesion and the meaning of the incidental extra colonic findings, which will be reviewed in this article. So far, the radiology service in Santa Maria Hospital has performed 30 CTC/VC exams. These exams had in general, an appropriate preparation and distention of the colon. They resulted in the detection of four cases with polyps above 5mm (cut off of clinical relevance), one polyp > 10mm and 2 neoproliferative lesions. The extra-colonic findings were mainly liver and kidney cysts, atherosclerotic disease of the abdominal aorta and hiatus hernias. |
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