title: MR imaging of pelvic extraperitoneal masses: A diagnostic approach.
abstract: Pelvic extraperitoneal pelvic masses are relatively uncommon conditions and generally raise diagnostic imaging challenges. Magnetic resonance (MR) imaging plays a central role in the diagnosis of these masses due to its unique tissue-specific multiplanar capabilities that allow optimal pelvic mass localization and internal characterization. This article reviews the MR imaging presentation of extraperitoneal pelvic masses, gives clues that allow identifying their extraperitoneal and/or specific origin as well as suggests different steps for narrowing the differential diagnosis. These steps include systematic analysis of the clinical context, tumor location, relationships with major pelvic structures and close study of the internal components of the lesions.
authors.affiliation: Department of radiology, hospital Robert-Debré, Reims university hospital, rue du Général-Kœnig, 51100 Reims, France. Electronic address: annaellejanvier@hotmail.fr.
authors.forename: A
authors.initials: A
authors.lastname: Janvier
authors.affiliation: Department of radiology, hospices civils de Lyon, centre hospitalier Lyon Sud, université Claude-Bernard Lyon 1, 165, chemin du Grand-Revoyet, 69495 Pierre-Bénite, France.
authors.forename: P
authors.initials: P
authors.lastname: Rousset
authors.affiliation: Radiology department, hospital Saint-Antoine, AP-HP, 184, rue du Faubourg Saint-Antoine, 75012 Paris, France.
authors.forename: J
authors.initials: J
authors.lastname: Cazejust
authors.affiliation: Department of hepatogastroenterology and digestive oncology, hospital Robert-Debré, Reims university hospital, rue du Général-Kœnig, 51100 Reims, France.
authors.forename: O
authors.initials: O
authors.lastname: Bouché
authors.affiliation: Université Paris-Diderot, Sorbonne-Paris Cité, 10, rue de Verdun, 75010 Paris, France.
authors.forename: P
authors.initials: P
authors.lastname: Soyer
authors.affiliation: Department of radiology, hospital Robert-Debré, Reims university hospital, rue du Général-Kœnig, 51100 Reims, France.
authors.forename: C
authors.initials: C
authors.lastname: Hoeffel
mesh_terms: D000293:Adolescent; D000328:Adult; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D010386:Pelvic Neoplasms / Q000000981:diagnostic imaging*
keywords: Magnetic resonance imaging; Pelvic mass; Pelvis