In a study by Hara et al., highly significant extracolonic abnormalities were found in 31% of patients, prompting 18% of patients to have additional testing using modalities such as intravenous pyelography in 1, ultrasonography in 10, and CT in 13 [ 53 ].
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CT Colonography and Colorectal Carcinoma: Current Trends and Emerging Developments.
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