[Computed tomography of recurrent rectal cancer with reference to guided fine-needle biopsy].

Computed tomography as a non-invasive imaging method is of high sensitivity and specificity for the detection and the extent diagnosis of recurrent rectal carcinomas. CT-guided fine-needle-biopsy can be necessary to prove presacral masses, before appropriate therapeutic decisions can be done. In our material CT-guided FNB showed an accuracy of 78% in 27 of 35 patients. Possibilities and limitations of the method are described.