[CT in relapsing rectal carcinomas (author's transl)].

: In 12-15% of rectal carcinomas a relapse appears during the first two years. Until now, early radiological diagnosis by means of conventional methods was extremely difficult and subject to high and negative error rates. Computerized tomography--in comparison to conventional radiological methods--allows early recognition of these tumour relapses and finds excellent use for purposes of radiological post-operative management.