This practical volume is intended for all radiologists, gastroenterologists, and surgeons who are responsible for, or interested in, the diagnosis and care of patients with diseases of the anal and perianal region. After an introductory section focusing on surgical, MRI, and US anatomy, up-to-date clinical and therapeutic information is provided on the full range of perianal inflammatory conditions, with special attention to Crohn’s disease, ulcerative colitis, and sexually transmitted diseases. Physical and surgical examination is carefully discussed, with consideration of limitations, results, clinical needs, and the questions likely to be posed of imaging. The subsequent three sections provide detailed information on the different imaging modalities: transanal and transperineal ultrasound, contrast-enhanced MRI, and CT. Techniques, diagnostic accuracy, common and unusual disease patterns, artifacts, and pitfalls are clearly presented.
Table of Content
Section I Introduction.- 1 Perineum: Surgical Anatomy and Physiology.- 2 MRI Anatomy of the Anorectal Region.- 3 Ultrasound Anatomy of the Anorectal Region.- Section II Perianal inflammatory diseases.- 4 Crohn’s Disease.- 5 Ulcerative colitis.- 6 Cryptogenetic Fistulas.- 7 Sexually Transmitted Diseases.- 8 Cancer in Perianal Fistulas.- Section III Clinical Examination and Medical Needs.- 9 Clinical Examination.- 10 Surgical Examination Under Anesthesia.- Section IV Ultrasound.- 11 Techniques.- 12 Crohn’s Disease.- 13 Ulcerative Colitis.- 14 Cryptoglandular Fistulas.- 15 Cancer in Perianal Fistulas.- 16 Rare Diseases.- 17 Artifacts and Pitfalls.- Section V Magnetic Resonance Imaging (MRI).- 18 MRI Study Protocol.- 19 Dynamic MRI and the Assessment of Activity.- 20 Perianal Crohn’s disease MRI classification and staging.- 21 Diagnostic Accuracy of MRI in Perianal Crohn’s Disease.- 22 Post-surgical Findings and Post-treatment MRI Follow-Up.- 23 Ulcerative Colitis and Ileal Pouch Surgery.- 24 Cryptogenic Fistulas.- 25 Sexually Transmitted Diseases.- 26 Cancer in Perianal Fistulae.- 27 Rare Diseases.- 28 Artifacts and Pitfalls.- 29 Techniques and Role of CT in Perianal Disease.- 30 Integration of Diagnostic Modalities and Diagnostic Algorithms.
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