title: Magnetic resonance imaging using endoanal coil in anal canal tumors after radiochemotherapy or local excision.
abstract: The ideal method for evaluation of anal canal tumors after radiochemotherapy and/or local excision remains controversial. Endoanal magnetic resonance imaging (EMRI) is a new, promising technique. The effectiveness of EMRI is reported in a study of 24 patients. Axial SET1-weighted and TSET2-weighted, sagittal and coronal T2-weighted sequences using Fat-suppression were acquired. In 4 cases, the low signal/noise ratio did not allow a diagnosis. In 6 cases, the lesion was not detected. Parietal hypo-intense thickening was detected in 14 patients, but it was not diagnostic for disease recurrence. In this study, EMRI showed 58.3% sensitivity and 41.6% specificity, thus it was not useful in the follow-up of anal tumors.
authors.affiliation: First Department of Surgery, School of Medicine, University La Sapienza, Rome, Italy. marileda_indinnimeo@yahoo.it
authors.forename: M
authors.initials: M
authors.lastname: Indinnimeo
authors.forename: C
authors.initials: C
authors.lastname: Cicchini
authors.forename: A
authors.initials: A
authors.lastname: Stazi
authors.forename: G
authors.initials: G
authors.lastname: Alessandrini
authors.forename: C
authors.initials: C
authors.lastname: Ghini
authors.forename: F
authors.initials: F
authors.lastname: Fanelli
authors.forename: P
authors.initials: P
authors.lastname: Pavone
mesh_terms: D000328:Adult; D001003:Anal Canal / Q000473:pathology*; D001005:Anus Neoplasms / Q000175:diagnosis* / Q000188:drug therapy / Q000532:radiotherapy / Q000601:surgery / Q000628:therapy*; D002277:Carcinoma / Q000175:diagnosis* / Q000188:drug therapy / Q000532:radiotherapy / Q000601:surgery / Q000628:therapy*; D003937:Diagnosis, Differential; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D008875:Middle Aged; D011237:Predictive Value of Tests; D055502:Secondary Prevention; D012680:Sensitivity and Specificity