Experience with local rectal cancer excision in light of two recent preoperative diagnostic methods.

This study analyzes the usefulness of two diagnostic methods: endorectal echotomography and adenolymphoscintigraphy. Echotomography is an important means for determining the extent of a tumor beyond the rectal wall, whereas lymphoscintigraphy is useful in demonstrating the metastatic locations in lymph nodes. These two modes of evaluation may permit an evaluation of the extent of the tumor and the possible involvement of regional lymph nodes before a surgical operation. Although the case material is limited, the statistical data can lead one to believe that, in the near future, a reasoned choice will be possible between local excision and abdominoperineal resection. The study include 60 endorectal echotomographies and 26 lymphoscintigraphies (20 with99mTc colloid and six with 201-T1 colloid).