title: 3D-EAUS and MRI in the Activity of Anal Fistulas in Crohn's Disease.
abstract: Aim. This study aspires to assess the role of 3D-Endoanal Ultrasound (3D-EAUS) and Magnetic Resonance Imaging (MRI) in preoperative evaluation of the primary tract and internal opening of perianal fistulas, of secondary extensions and abscess. Methods. During 2014, 51 Crohn's disease patients suspected for perianal fistula were enrolled. All patients underwent physical examination with both the methods and subsequent surgery. Results. In the evaluation of CD perianal fistulas, there are no significant differences between 3D-EAUS and MRI in the identification of abscess and secondary extension. Considering the location, 3D-EAUS was more accurate than MRI in the detection of intersphincteric fistulas (p value = 10(-6)); conversely, MRI was more accurate than 3D-EAUS in the detection of suprasphincteric fistulas (p value = 0.0327) and extrasphincteric fistulas (p  value = 4 ⊕ 10(-6)); there was no significant difference between MRI and 3D-EAUS in the detection of transsphincteric fistulas. Conclusions. Both 3D-EAUS and MRI have a crucial role in the evaluation and detection of CD perianal fistulas. 3D-EAUS was preferable to MRI in the detection of intersphincteric fistulas; conversely, in the evaluation of suprasphincteric and extrasphincteric fistulas the MRI was preferable to 3D-EAUS.
authors.affiliation: Department of Radiology, Ascalesi Hospital, 80100 Naples, Italy.
authors.forename: Maria Eleonora
authors.initials: ME
authors.lastname: Alabiso
authors.affiliation: Department of Internal and Experimental Medicine, Second University of Naples, 80100 Naples, Italy.
authors.forename: Francesca
authors.initials: F
authors.lastname: Iasiello
authors.affiliation: Unit of Colorectal Surgery, Department of Medical, Surgical, Neurologic, Metabolic and Ageing Sciences, Second University of Naples, 80100 Naples, Italy.
authors.forename: Gianluca
authors.identifier: 0000-0002-8322-6421
authors.initials: G
authors.lastname: Pellino
authors.affiliation: Department of Internal and Experimental Medicine, Second University of Naples, 80100 Naples, Italy.
authors.forename: Aniello
authors.initials: A
authors.lastname: Iacomino
authors.affiliation: Department of Internal and Experimental Medicine, Second University of Naples, 80100 Naples, Italy.
authors.forename: Luca
authors.initials: L
authors.lastname: Roberto
authors.affiliation: Department of Radiology, Cardarelli Hospital, 80100 Naples, Italy.
authors.forename: Antonio
authors.initials: A
authors.lastname: Pinto
authors.affiliation: Unit of Gastroenterology, Department of Medical, Surgical, Neurologic, Metabolic and Ageing Sciences, Second University of Naples, 80100 Naples, Italy.
authors.forename: Gabriele
authors.initials: G
authors.lastname: Riegler
authors.affiliation: Unit of Colorectal Surgery, Department of Medical, Surgical, Neurologic, Metabolic and Ageing Sciences, Second University of Naples, 80100 Naples, Italy.
authors.forename: Francesco
authors.initials: F
authors.lastname: Selvaggi
authors.affiliation: Department of Internal and Experimental Medicine, Second University of Naples, 80100 Naples, Italy.
authors.forename: Alfonso
authors.initials: A
authors.lastname: Reginelli
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