経直腸的超音波検査を用いた深部痔ろうの画像診断

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  • Image diagnosis of deep anal fistula in the rectum using transrectal ultrasonography.

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Transrectal ultrasonography was performed on 20 patients for preoperative examination of deep anal fistula and periproctic abscess and the results were evaluated. <BR>The intrinsic muscle, levator ani muscle and internal and external anal sphinctor muscles were shown on the images, and using these findings the sites of lesions were more objectively determined and classified for diagnosis, It became apparent that fistula, which caused so-called rectal stenosis, was often present in the submucosal layer. <BR>Transrectal ultrasonography can be performed with case on patients with deep anal fistula or periproctic abscess with little stress. It is used for aspiration biopsy cytology by ultrasonics in cases of suspected malignant change in the fistula and for reliable incision of periproctic abscess. A objective diagnosis could be made to decide the site of lesions using preoperative Ultrasonography for deep anal fistula and abscess in the rectum and anus.

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