Untersuchung der Genauigkeit des präoperativen Stagings mittels endoskopischem Ultraschall, Computertomographie und Magnetresonanztomographie beim Rektumkarzinom
LicenseStandard (Fassung vom 01.10.2008)
Purpose: To compare endoluminal ultrasonography (US), computed tomography (CT) and magnetic resonance (MR) imaging in rectal cancer staging. Materials and methods: Included were 184 patients who underwent primary surgery, and data were transferred into 2 x 2 tables. Results: Accuracies of US, CT and MR were comparable, except in stage T3 (43 % in CT, 63 % in MR and US). In stage T1 (79 - 87 %) and T4 (87 - 95 %) accuracy was higher than in stage T2 (60 - 68 %) and T3 (46 - 63 %). Accuracies in detecting lymph node involvement were 55 - 61 %. Overstaging with following overtherapy occurred in 13 % (CT), 21 % (US) and 26 % (MR) respectively. Conclusion: None of the three imaging methods was superior to the others to determine the locoregional stage. Detecting lymph node involvement is a general problem for preoperative staging. Overstaging and therefore overtherapy is a major problem and occurred in up to 26 % of the patients.
Subject HeadingsMastdarm [GND]
Rectal neoplasms [MeSH]