Evaluation and treatment of patients receiving radiation for cancer of the rectum or sigmoid colon in the United States: results of the 1988-1989 Patterns of Care Study process survey.

Purpose: For the first time, a Patterns of Care Study (PCS) was conducted in 1989 to determine the national practice standards of radiation oncologists in evaluating and treating adenocarcinoma of the rectum and sigmoid colon.

Materials And Methods: A national survey of 73 institutions using two-stage cluster sampling was conducted, and specific information on 408 patients from 69 facilities with adenocarcinoma of the rectum and sigmoid colon who received radiation as part of definitive or adjuvant management was collected.

Results: Using the modified Astler-Coller (MAC) pathologic staging system, the stage distribution was as follows: A, 0.

A therapeutic approach to primary adenocarcinoma of the cervix.

Retrospective study of 97 patients with primary adenocarcinoma of the uterine cervix was undertaken to evaluate the efficacy of two treatment methods, radiation alone and radiation plus surgery. Of 31 Stage I patients, 16 were treated with radiation alone and 15 with combined radiation plus surgery. There was no difference in 5-year disease-free survival of Stage I patients treated by either method.