title: [Computed tomography and magnetic resonance tomography of rectal and sigmoid tumors].
abstract: CT and MR imaging are of minor importance for the preoperative diagnosis of rectosigmoid carcinoma. A synchronous colon tumor can be excluded with a barium enema, while an accurate diagnosis of liver metastases is possible using real-time ultrasonography. However, post-operative management requires the use of tomographic methods: MR imaging has proved to be more accurate than CT for differentiation between local recurrence and post-operative scars. Therefore MRI should be the method of choice after surgery for rectosigmoid carcinoma in all patients without postoperative baseline examinations.
authors: Institut und Poliklinik für Radiologische Diagnostik der Universität zu Köln.
authors: G P
authors: GP
authors: Krestin
authors: R
authors: R
authors: Lorenz
authors: W
authors: W
authors: Steinbrich
mesh_terms: D006801:Humans; D008279:Magnetic Resonance Imaging; D012004:Rectal Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging; D012811:Sigmoid Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging; D014057:Tomography, X-Ray Computed
vernacular_title: Computertomographie und Kernspintomographie bei Rektum- und Sigmatumoren.