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Applications of Ultrasound of the Rectum and Anus

Applications of Ultrasound of the Rectum and Anus Ultrasound has many useful applications in the rectum and anus. The application most extensively studied and used is local staging of rectal tumors. Ultrasound can correctly identify the depth of neoplastic penetration in 80–85% of cases. The main weakness of ultrasound in staging rectal tumors is its tendency to overstage tumor depth. This overstaging is generally due to inflammation and fibrosis associated with the tumor. Even with its tendency to overstage. ultrasound is more accurate in staging the local tumor than is digital examination or computed tomography. Apart from its use in staging rectal tumors, ultrasound is also useful in imaging the anal sphincters. This application has been helpful in identifying causes of fecal incontinence. Ultrasound provides an objective method of documenting the anatomic anal sphincter abnormalities and measuring physiologic weakness in the puborectalis muscle. The traditional methods of manometry, electromyography, and defecography have many disadvantages. Ultrasound's general advantage over all these techniques is that it is less expensive. Furthermore, ultrasound is less painful than electromyography and, unlike defecography, does not involve use of ionizing radiation. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Ultrasound quarterly Wolters Kluwer Health

Applications of Ultrasound of the Rectum and Anus

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ISSN
0894-8771
eISSN
1536-0253

Abstract

Ultrasound has many useful applications in the rectum and anus. The application most extensively studied and used is local staging of rectal tumors. Ultrasound can correctly identify the depth of neoplastic penetration in 80–85% of cases. The main weakness of ultrasound in staging rectal tumors is its tendency to overstage tumor depth. This overstaging is generally due to inflammation and fibrosis associated with the tumor. Even with its tendency to overstage. ultrasound is more accurate in staging the local tumor than is digital examination or computed tomography. Apart from its use in staging rectal tumors, ultrasound is also useful in imaging the anal sphincters. This application has been helpful in identifying causes of fecal incontinence. Ultrasound provides an objective method of documenting the anatomic anal sphincter abnormalities and measuring physiologic weakness in the puborectalis muscle. The traditional methods of manometry, electromyography, and defecography have many disadvantages. Ultrasound's general advantage over all these techniques is that it is less expensive. Furthermore, ultrasound is less painful than electromyography and, unlike defecography, does not involve use of ionizing radiation.

Journal

Ultrasound quarterly – Wolters Kluwer Health

Published: Jan 1, 1995

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