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CHONDROSARCOMA OF THE PELVIS: PROGNOSTIC FACTORS



Abstract

Purpose of the study: To analyze survival and prognostic factors in a series of patients treated for chondrosarcoma of the pelvis.

Material and methods: The series included 106 patients (53 women and 53 men) treated for non-metastatic chondrosarcoma of the pelvis. Minimum follow-up was two years. Mean age at diagnosis was 44 years. Tumors were grade 1 (n=47), grade 2 (n=37), grade 3 (n=22). Conservative surgery was performed in 73 patients (resection with or without reconstruction) and interilio-abdominal disarticulation for 33.

Results: Resection margins were sufficient for 34 patients (wide or radical resection), marginal for 35, and intratumoral or malignant for 37. Local recurrence was noted in 39 patients (37%). Prognostic factors affecting local recurrence were: quality of resection (p=0.03), grade (p=0.01). Overall survival at 5, 10 and 15 years were 72, 56, and 46% respectively. Survival was strongly correlated with grade (p=0.08) and survival after five years was also correlated with resection margins.

Conclusions: In this series, tumor grade was the most important prognostic factor for patients with chondrosarcoma of the pelvis but achieving satisfactory resection with wide margins also has a significant effect on prognosis for local recurrence and long-term survival.

Correspondence should be addressed to SOFCOT, 56 rue Boissonade, 75014 Paris, France.