Gastroenterologia Japonica

, Volume 8, Issue 4, pp 363–377 | Cite as

La technique de la colonofibroscopie

  • Yoshihiro Sakai
  • Shinroku Ashizawa
Original Article


Four hundred patients were studied wit 485 examinations by colonofiberscopy. It was found that any type of colonofiberscope would pass the upper part of the sigmoid colon in almost every patient except thosewith advanced carcinoma. After passing the fiberscope through the sigmoid colon, there are three difficult places through which the fiberscope must pass ; the junction between the sigmoid colon and descending colon, the splenic flexure, and the mid-transverse colon to the hepatic flexure. Passage through the junction between the sigmoid colon and the descending colon was solved completely by using the 180 degrees counter-clockwise rotation method. After passing through there the fiberscope has to be intentionally rotated 180 degrees clockwise direction to release the sigmoid loop and make a straight course. The inserting force is directed to the tip of the fiberscope. Occasionally, after the fiberscope has reached the splenic flexure, further insertion is impossible due to an acute flexure of the colon and flexibility of the fiberscope. Passage through the splenic flexure was often solved by using a steel wire and/or a stiffening tube. In patients studied for the purpose of examining the cecum, a success rate of moret han 40 per cent was obtained. This procedure is very useful for preoperative diagnosis, cautery-snare rescetion, and careful long-term follow-up studies. It is also advisable for the determination of medical inflammatory changes, for the determination of surgical procedures of neoplasms, and to help to decrease the number of unnecessary laparotomies. Specifications for these colonofiberscopes, therapy for examination technics, and ome points of improvement are presented. A cooperative underastnd-ing from the radilolgy department which provides fluoroscopic assistance is necessary to ensure safety during the procedure : fluoroscopy permits observation of the position of the fiberscope, and facilitates its insertion, withdrawal, and rotation.

Key words

Colonofiberscopy CF-SB CF-LB 180-degree counterclodkwise rotation 180-degree clockwise rotation 


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  1. 1).
    Wynder, E.L. at al: Envilonmental factors of cncer of the colon and rectum, II, Japanese epidemilolgical data, Cancer 23:1210, 1969PubMedCrossRefGoogle Scholar
  2. 2).
    Overholt, B.F.: Flexible fiberoptic sigmoidoscopes, C.A. 19:81, 1969Google Scholar
  3. 3).
    Turell, R.: Fiber optic sigmoidscopes, Up-to-date developments, Amer, J. Surg. 113:305, 1967CrossRefGoogle Scholar
  4. 4).
    Sakai, Y. et al: Endoscopic examination of the rectum and sigmoek, I, A new model of rectosigmoid-fiberscope (Jap.) J. Tokyo Med. College 28:239, 1970Google Scholar
  5. 5).
    Sakai, Y. and Ashizawa, S.: Fiberscopic examination of the rectum an sigmoid colon, Jap X Gastroenterol. 5:281, 1970Google Scholar
  6. 6).
    Dean, A.C.B. and Shearman, D.J.V. : Clinical evaluation of anew fiberoptic colonoscpoe, The Lancet (March 14), 550, 1970Google Scholar
  7. 7).
    Sakai, Y. et al: Some improvements on the colonofiberscope (Jap.), Rinsho Seijinbyo 3: in the press, 1972Google Scholar
  8. 8).
    Sakai, Y. et al: Endoscopic examination of the rectum and sigmoid colon, II, Normal findings and borderline lesions (Jap.), Gastroenterol. Endoscopy 12:374, 1970Google Scholar
  9. 9).
    Sakai, Y. et al: Pretreatment and posttreatment of the colonofiberscopy (Jap.), Naika 30: 571, 1970Google Scholar
  10. 10).
    Fukutake, K. et al: Endoscopie examination of the rectum and colon, V, Polyp (Jap.), Gastroenterol. Endoscopy 13:409, 1972Google Scholar
  11. 11).
    Sakai, Y. et al: Peutz-Jaeghers syndrome (Jap.), Stomach and Intestine 5:659, 1970Google Scholar
  12. 12).
    Fukutake, K. et al: Endoscopic examination of the rectum and colon, VI, Ulcerative colitis (Jap.), Gastroenterol. Endoscopy 14: in the press, 1972Google Scholar
  13. 13).
    Fukutake, K. et al: Endoscopic examination of the rectum and igmoid colon, III, Diverticulum and septum formation (Jap.), Gastroenterol. Endoscopy 12:398, 1970Google Scholar
  14. 14).
    Sakai, Y. et al: Endoscopic examination of the rectum and colon, IV, Melanosis coli (Jap.), Gstroenterol. Endoscopy 13:61, 1971Google Scholar
  15. 15).
    Sakai, Y. et al: Sterilization of the colonofiberscope, I, Effect of fluid aseptics (Jap.), Naika 28:938, 1971PubMedGoogle Scholar
  16. 16).
    Hayashi, M. et al: Sterilization of the colonofiberscope, II, Effect of ethylen oxide gas (Jap.), Naika 29:324, 1972PubMedGoogle Scholar
  17. 17).
    Niwa, H. et al: Colonofiberscopy, Gastrointest. Endoscopy 11:163, 1969Google Scholar
  18. 18).
    Matsunaga, F. et al; Sigmoidscope, Gekachiryo 14:568, 1966Google Scholar
  19. 19).
    Matsunaga, F. et al: Photograhpy of the colonic mucosa by the Sigmoidcamera Gastrointest, Endoscopy 1:58, 1959Google Scholar

Copyright information

© The Japanese Society of Gastroenterology 1973

Authors and Affiliations

  • Yoshihiro Sakai
    • 1
  • Shinroku Ashizawa
    • 1
  1. 1.Tokyo Medical College HospitalTokyoJapan

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