title: Rectosigmoid endometriosis with unusual presentation at magnetic resonance imaging.
abstract: We report on a patient with a bowel endometriotic nodule that was hypointense on both T1- and T2-weighted magnetic resonance imaging (MRI); histologic examination revealed that the MRI appearance of the nodule was due to the presence of extensive fibrosis. Bowel endometriotic nodules with extensive fibrosis and limited endometrial tissue have a signal intensity similar to that of the muscle on both T1- and T2-weighted images. In these patients, additional techniques such as multislice computed tomography enteroclysis may be used for adequate diagnosis before surgery.
authors.affiliation: Department of Radiology, Galliera Hospital, Genoa, Italy.
authors.forename: Ennio
authors.initials: E
authors.lastname: Biscaldi
authors.forename: Simone
authors.initials: S
authors.lastname: Ferrero
authors.forename: Valentino
authors.initials: V
authors.lastname: Remorgida
authors.forename: Ezio
authors.initials: E
authors.lastname: Fulcheri
authors.forename: Gian Andrea
authors.initials: GA
authors.lastname: Rollandi
mesh_terms: D004715:Endometriosis / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery; D005260:Female; D006801:Humans; D010535:Laparoscopy; D008279:Magnetic Resonance Imaging / Q000379:methods*; D012002:Rectal Diseases / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery; D012810:Sigmoid Diseases / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery; D014057:Tomography, X-Ray Computed