Endoscopic Diagnosis of the Lower Rectum and Anal Canal Yoshihiro Sakai 1 , Kunihisa Nishikawa 2 , Yoshinori Igarashi 2 , Sumio Fujinuma 2 1Department of Gastroenterology, School of Medicine, Toho University, Ohhashi Hospital 2Department of Third Internal Medicine, School of Medicine, Toho University Ohhashi Hospital pp.249-254
Published Date 1987/3/25
DOI https://doi.org/10.11477/mf.1403112495
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 Endoscopic observation of the lower part of the rectum and proximal part of anal canal was discussed. As in the other segments of the bowel, endoscopic observation should be performed not only during withdrawal but also during insertion of the instrument. The usual manner, however, was often insufficient to obtain a clear view of these parts. For that reason, the U-turn technique was added. This could be performed in all cases except when there was poor distension of the lower part of the rectum due to cancer invasion or inflammatory process, and when observation was difficult because of decreased sphincter tone of the anus. Endoscopic exploration by this procedure enabled complete observation of all except one part of the posterior wall. It proved helpful in the discovery of most lesions. For biopsy of tissue from polyp and cancer and for polypectomy, on the other hand, the rigid anoscope was also useful.

 In conclusion, endoscopic diagnosis of the lower part of the rectum and proximal part of the anal canal should be performed using various techniques and instruments in order to obtain complete results.

Copyright © 1987, Igaku-Shoin Ltd. All rights reserved.


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