While the imaging of the anus may appear straightforward, most residents are not comfortable in the imaging interpretation of the anal pathology until late in their training. MR imaging is also rapidly emerging as a powerful tool for pre-surgical planning of the anal region. Therefore, it is important for residents to be familiar with anal anatomy and pathology early on in their career.At the end of the exhibit, the reader will:1. Understand the anatomy of the normal anal sphincter. 2. Learn about the various anal pathology that exists and its appearances on fluoroscopy, US, CT, PET-CT, and MRI. 3. Be familiar with the optimal MRI protocols and post-processing techniques in imaging the anus.
TABLE OF CONTENTS/OUTLINE Descriptions on the anatomy of the anal canal.
Pictorial review of various anal pathology: Congenital (anorectal malformations), Traumatic, Iatrogenic, Inflammatory (ulcerative colitis, Crohn’s disease), Infectious (perianal abscess, pilonidal sinus disease), and Neoplastic processes (primary cancer, lymphoma, metastases).
MR imaging protocols and post-processing technique recommendations.