Diagnosis of right-sided colon cancer. How can it be detected earlier? : How can it be detected earlier?

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In a retrospective study of 953 colorectal cancers, 93 patients presented with right-sided colon cancer.<BR>Most of the patients visited hospital after development of symptoms and most lesions were at the Dukes' B or C stage.<BR>Fecal occult blood test was positive in 63 (88.7%) of 71 patients examined and was on effective indicator of colon cancer in 8 patients, including 3 with Dukes' A lesions.<BR>We experienced 2 asymptomatic patients with Dukes' A lesions, in whom the condition was discovered upon screening for fecal occult blood.<BR>Although it is important to make a diagnosis before symptoms occur, it is difficult to perform Ba-enema and colonoscopy in a large number of aymptomatic patients. Since fecal occult blood testing is simple and safe for screening a large number of asymptomatic patients and healthy persons, it appears to be a practical method for detecting right-sided colon cancer earlier than can be done at present.