Abstract
There were 47 failures among 73 verified cases of uterine sarcoma reported at the University of Rochester Tumor Registry from 1955 to 1975; they constitute the subject of this report. Of 33 patients initially treated with surgery only [S], 19 patients (58%) failed; 20 of 31 patients (65%) treated with surgery and radiation [S + R] failed; 8 of 9 patients (89%) treated by radiation alone [R] failed. According to pathology, failures occurred in 33 of 44 patients (75%) with mixed mesodermal sarcomas (MMS), 7 of 20 patients (35%) with leiomyosarcoma (LMS), 4 of 6 patients with endometrial stromal sarcomas (ESS), and 3 of 3 patients with other types of sarcoma. Once corrected by stage, there were no significant differences in failure rates, spread patterns or survival among these main histologic variants. Twenty of 41 patients (56%) with Stage I tumors failed with an average failure time of 32 months. Twenty-seven of 32 patients (84%) with Stages II, III, and IV tumor failed; their average failure time was only 9 months. The mean failure time for both the patients treated with [S] and [S + R] was 22 months; for patients treated by [R] it was 3 months. Isolated pelvic failures constituted only 4% of all failures, failures both in the pelvis and in distant sites, 49%, and distant metastases, 47%. There was a marked decrease in pelvic failures in patients treated with [S + R] when compared to those who received [S]. Adjuvant radiation proved to increase tumor control in the pelvis but did not influence the final outcome because over 90% of all failures developed distant spread outside the pelvis. The most common distant failures were in the upper abdomen (mainly omentum and peritoneum) and in the lungs. Lung metastases alone was the only site of failure in 16% of the instances. A comprehensive treatment approach based on the spread and failure patterns will be proposed.
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