Endoscopic ultrasonography in inflammatory bowel diseases.

Endoscopic ultrasound (EUS) was designed for the evaluation of malignancies; however, its utility has been extended to the assessment of benign disorders, which include inflammatory bowel diseases. Topics discussed in this article include instruments and methods, EUS images in various inflammatory diseases, clinical severity and EUS typing, endoscopic grading of inflammation and EUS typing, extent of disease involvement and EUS typing, response to therapy and EUS typing, changes in EUS findings by treatment, Crohn's disease, radiation proctitis, ischemic colitis, tuberculosis, and mucosal prolapse syndrome.