The advantages of the 30-cm flexible sigmoidoscope over the 60-cm flexible sigmoidoscope

G. M. Zucker, M. J. Madura, J. S. Chmiel, E. J. Olinger

Research output: Contribution to journalArticlepeer-review

16 Scopus citations


To determine the optimal length of the flexible fiberoptic sigmoidoscope we performed a randomized, blinded comparison study of the standard 60-cm instrument with a prototype 30-cm instrument with identical design features. Ninety-six male patients referred for symptom evaluation underwent examination with both instruments in random order by different examiners; positive examinations were followed by colonoscopy or surgery. Performance of the 30-cm sigmoidoscope compared with the 60-cm instrument revealed that the former was significantly more likely to yield a complete examination (74 vs. 32 examinations, p < 0.002), took less time to perform (6.4 vs. 9.8 min, p < 0.0001), and was more acceptable to patients and physicians. The 30-cm instrument was not significantly less effective than the 60-cm instrument in detecting polyps (21 vs. 25), adenocarcinoma (six for each), and inflammatory lesions. For these reasons, we conclude that the 30-cm flexible sigmoidoscope has a role in the evaluation of coiorectal complaints.

Original languageEnglish (US)
Pages (from-to)59-64
Number of pages6
JournalGastrointestinal endoscopy
Issue number2
StatePublished - 1984

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Gastroenterology


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