Sutherland Tom, Coyle Elizabeth, Lee Wai Kit, Lui Belinda
Department of Medical Imaging, St Vincent's Hospital, Melbourne, Victoria, Australia.
Aust Fam Physician. 2011 Mar;40(3):117-20.
Colorectal cancer is common, over 13,000 cases were diagnosed in Australia in 2005. The pathogenesis of colorectal cancer has been well investigated and usually occurs in a predictable sequence progressing from dysplasia, to carcinoma in situ before becoming an invasive malignancy. The symptoms and signs of colorectal polyps and masses are often nonspecific, however, given that polyps are easily cured with polypectomy, it is vital to have an accurate and acceptable diagnostic test. Traditional tests include conventional (optical) colonoscopy and double contrast barium enema. Computed tomographic (CT) colonography is a newer, minimally invasive method for examining the colon for colorectal polyps.
To inform general practitioners about CT colonography, its evidence, indications, controversies and extracolonic ancillary findings.
The evidence supporting CT colonography is discussed along with how it is performed, as well as a discussion of the factors unique to it, such as extracolonic findings and polyp management.
结直肠癌很常见，2005年澳大利亚有超过13000例病例被诊断出来。结直肠癌的发病机制已得到充分研究，通常按可预测的顺序发展，从发育异常到原位癌，再发展为浸润性恶性肿瘤。结直肠息肉和肿块的症状和体征往往不具有特异性，然而，鉴于息肉通过息肉切除术很容易治愈，拥有准确且可接受的诊断测试至关重要。传统测试包括传统（光学）结肠镜检查和双重对比钡灌肠。计算机断层扫描（CT）结肠成像术是一种用于检查结肠是否存在结直肠息肉的更新的、微创方法。
向全科医生介绍CT结肠成像术、其证据、适应症、争议以及结肠外辅助检查结果。
讨论了支持CT结肠成像术的证据、其操作方法，以及对其独特因素的讨论，如结肠外检查结果和息肉处理。
