Endoscopic ultrasonography in inflammatory bowel disease, paracolorectal inflammatory pathology, and extramural abnormalities.

Endoscopic ultrasound (EUS) is easy to perform, noninvasive, and well tolerated in individuals with inflammatory bowel disease. In the anorectal region, the examination takes minimal preparation and has become a routine procedure in the diagnosis and therapeutic follow-up of malignant and nonmalignant disorders. Topics discussed in this article include techniques, abscesses, and fistulas.