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Ann Surg. Feb 1995; 221(2): 185–195.
PMCID: PMC1234952

Prognostic factors predictive of survival for truncal and retroperitoneal soft-tissue sarcoma.

Abstract

OBJECTIVE: The authors identified prognostic factors relevant to clinical outcomes (especially survival) in truncal and retroperitoneal soft-tissue sarcoma. SUMMARY BACKGROUND DATA: These results can be used to optimize surgical management and select patients most likely to benefit from novel therapeutic strategies in future trials. METHODS: A retrospective analysis was performed of a prospectively compiled database of 183 consecutive patients with truncal and retroperitoneal sarcomas seen at the Brigham and Women's Hospital and the Dana Farber Cancer Institute between 1970 to 1994. RESULTS: For truncal sarcoma, multivariate analysis showed that high-grade histology was associated with an eightfold increased risk of death compared with low-grade histology (p = 0.001). In addition to grade, gross positive margin of resection (p = 0.001), microscopic positive margin (p = 0.023), and tumors greater than 5 cm in size (p = 0.018) were important independent prognostic factors for survival. In this series, postoperative radiation therapy for truncal sarcoma was associated with a 2.4-fold decreased risk of death compared with truncal sarcoma patients receiving no adjuvant radiation therapy, having adjusted for the other prognostic factors (p = 0.030). In contrast, for retroperitoneal sarcoma, multivariate analysis showed that high-grade and intermediate-grade histology were associated with a five- to sixfold increased risk of death compared with low-grade histology (p = 0.009). In addition to grade, gross positive margin of resection (p = 0.001) and microscopic positive margin (p = 0.004) were important independent prognostic factors for survival in retroperitoneal sarcoma. Patients who received either preoperative or postoperative chemotherapy for retroperitoneal sarcoma had a 4.6-fold (p = 0.002) and 3-fold (p = 0.010) increased risk of death, respectively, compared with patients receiving no adjuvant chemotherapy, having adjusted for the other prognostic factors. CONCLUSIONS: The histologic grade and the margin of resection are prognostic for survival in both truncal and retroperitoneal soft-tissue sarcoma. Tumor size was an independent prognostic factor for truncal sarcoma, but not for retroperitoneal sarcoma. Postoperative adjuvant radiation was beneficial to overall survival for truncal sarcoma. In this series of patients receiving a heterogeneous mixture of chemotherapeutic regimens-either as preoperative "neoadjuvant" therapy or as postoperative "adjuvant" therapy, there were no beneficial effects on survival compared with nonrandomized patients not receiving chemotherapy.

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Selected References

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