title: [Local diagnostics for rectal cancer. What is realistic?].
abstract: Accurate pretherapeutic staging of rectal cancer is crucial for further therapeutic management and important for prognosis. The most accurate diagnostic tools in the assessment of T and N categories of rectal cancer are endorectal ultrasound (EUS) and magnetic resonance imaging (MRI). Furthermore, MRI can accurately predict the distance of the tumor to the colorectal membrane (CRM) and computed tomography (CT) is more suitable for detecting distant metastases. In the routine care of rectal cancer EUS is the most frequently used diagnostic tool for local staging. The achieved accuracy for determining T category by EUS in routine clinical staging is lower than results reported in the literature. Furthermore, the accuracy of EUS depends on the experience of the examiner. Currently the frequency of using MRI for routine clinical staging of rectal cancer is low and in one out of five cases the local staging of rectal cancer is exclusively carried out by CT.
authors.affiliation: An-Institut für Qualitätssicherung in der operativen Medizin gGmbH, Otto-von-Guericke-Universität Magdeburg, Leipziger Str. 44, 39120, Magdeburg, Deutschland. h.ptok@ctk.de
authors.forename: H
authors.initials: H
authors.lastname: Ptok
authors.forename: I
authors.initials: I
authors.lastname: Gastinger
authors.forename: H
authors.initials: H
authors.lastname: Lippert
mesh_terms: D019160:Endosonography; D006801:Humans; D007090:Image Interpretation, Computer-Assisted; D008279:Magnetic Resonance Imaging; D009367:Neoplasm Staging; D011379:Prognosis; D012004:Rectal Neoplasms / Q000175:diagnosis* / Q000473:pathology* / Q000628:therapy; D012007:Rectum / Q000473:pathology; D012680:Sensitivity and Specificity; D014057:Tomography, X-Ray Computed