Chapter 1 SURGEON PERFORMED ULTRASOUND IN PROCTOLOGICAL PRACTICE: AN OVERVIEW -- Introduction -- Ultrasound in Perianal Abscess and Fistula-in-Ano -- Ultrasound Assessment of Fecal Incontinence -- Endoanal,Transvaginal and Dynamic Transperineal -- Endosonography in Functional Bowel Disorders.-Chapter 2 CLINICAL USE OF TWO-DIMENSIONAL ENDOANAL AND TRANSVAGINAL SONOGRAPHY -- Introduction -- Normal Anatomy (Endoanal and Transvaginal) -- Anal Sepsis -- Crohn’s Disease -- Fecal Incontinence -- Trauma -- Following STARR Procedure -- Fecal Incontinence and Rectal Prolapse -- Postsurgical Miscellanea.-Evacuatory Disorders -- Congenital Conditions -- Anal Fissure -- Proctalgia -- References -- Chapter 3 THREE-DIMENSIONAL ENDOANAL ULTRASOUND IN BENIGN PROCTOLOGICAL PRACTICE -- Introduction.-Normal Anatomy -- Fecal Incontinence -- Anal Fistula and Abscess -- Constipation and Proctalgia -- Chapter 4 STATIC AND DYNAMIC TRANSPERINEAL SONOGRAPHY IN BENIGN PROCTOLOGY -- Introduction -- Normal Anatomy -- Fecal Incontinence -- Anal Fistula -- Recto-Vaginal Fistula -- Transperineal Ultrasound in Evacuatory Dysfunction -- Rectoanal Intussusception -- Enterocele -- Peritoneocele Rectal Prolapse Rectocele -- Evacuatory Block Due to Extra-Rectal Mass -- Familial Hypertrophic Internal Sphincter Imperforate Anus.