title: [The role of CT and MR in assessing the patient operated on for rectal carcinoma: the local recurrence of the disease].
abstract: Computed tomography (CT) and magnetic resonance (MR) findings in a series of 27 patients treated surgically for rectal cancer (13 rectal amputations, 8 sphincter-saving resections and 6 with the Hartmann technique) and affected with local recurrence at the time of examination (1989-1993), were retrospectively reviewed. Every detected lesion was studied relative to morphologic features (shape, outline, surrounding tissue involvement, symmetric growth toward the mid-longitudinal plane), patterns of both CT contrast enhancement and MR signal intensity with different acquisition techniques. The most typical patterns of disease recurrence were: a roundish or nodular shape (the whole group of rectal amputations), irregular outline (25 of 27 cases), infiltrative growth (23 of 27), asymmetry (25 of 27), CT enhancement > 20 HU (24 of 27), medium-high MR signal intensity on T2-weighted images (26 of 27 cases). We report on 5 cases with no positive correlation between CT enhancement and MR signal on T2-weighted images, trying to correlate this disagreement with specific histopathologic patterns.
authors.affiliation: Dipartimento di Fisiopatologia Clinica, Università degli Studi di Firenze.
authors.forename: S
authors.initials: S
authors.lastname: Colagrande
authors.forename: A
authors.initials: A
authors.lastname: Tonarelli
authors.forename: A
authors.initials: A
authors.lastname: Bartolozzi
authors.forename: G
authors.initials: G
authors.lastname: Giannardi
mesh_terms: D000230:Adenocarcinoma / Q000175:diagnosis* / Q000601:surgery; D000368:Aged; D003287:Contrast Media; D003937:Diagnosis, Differential; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D009364:Neoplasm Recurrence, Local / Q000175:diagnosis*; D012004:Rectal Neoplasms / Q000175:diagnosis* / Q000601:surgery; D012007:Rectum / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery; D012189:Retrospective Studies; D014057:Tomography, X-Ray Computed
chemical_list: D003287:Contrast Media