Objective:To investigate the characteristics of spiral CT and evaluate its diagnostic value in rectum and colon cancer.
前言： 目的：探讨螺旋CT在直肠癌和结肠癌的表现及诊断价值。
Methods: ct characteristics of 21 rectum and colon cancer cases proved by operation and pathology were retrospectively analyzed.
方法：回顾性分析21例经手术病理证实的直、结肠癌的CT表现及手术病理资料。
For both incidence and mortality, the association was stronger for cancer of the rectum than of the colon.
无论是发病率还是死亡率，吸烟对直肠癌的影响均强于对结肠癌的影响。
Most colorectal cancers begin as a growth, or tumor, on the inner lining of the colon or rectum called a polyp, and they can change to cancer over many years.
大多数结肠癌刚开始是在结肠或直肠内表面生长出息肉，经数年后会变成肿瘤。
The top six cancers were lung, stomach, liver, female breast, colon and rectum cancer.
主要恶性肿瘤为肺癌、胃癌、肝癌、乳腺癌、结直肠癌。
Results: Cancer can be found in cases of various age, specially between 55 and 70 years old, in various location, 80% was in rectum and sigmoid colon.
结果：癌肿可见于任何年龄，最多见55 ~ 70岁；癌肿可见于大肠任何部位，其中直肠、乙状结肠占80%。
Results: Cancer can be found in cases of various age, specially between 55 and 70 years old, in various location, 80% was in rectum and sigmoid colon.
结果：癌肿可见于任何年龄，最多见55 ~ 70岁；癌肿可见于大肠任何部位，其中直肠、乙状结肠占80%。
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