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Previous Volume 332:1581-1582 June 8, 1995 Number 23 Next

	Since this article has no abstract, we have provided an extract of the first 100 words of the full text and any section headings.

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To the Editor: Chui et al. (Dec. 22 issue)¹ found that hydrocolonic ultrasonography was less useful than colonoscopy for detecting colorectal polyps and cancers. Although their data may well be accurate, their conclusions contradict not only my experience^2,3 but the findings of other, similar studies.^{4,5,6,7,8,9,10,11}

Chui et al. studied 52 patients. Most of the patients with polyps had only small polyps. I have also found that hydrocolonic ultrasonography has a low sensitivity for detecting polyps less than 7 mm in diameter. The failure to detect such small polyps is not of great clinical importance, however, since colorectal cancer is no . . . [Full Text of this Article]

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