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10.1245/s10434-006-9325-0
Annals of Surgical Oncology 14:1583-1590 (2007)
© 2007 Society of Surgical Oncology
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Original Article

Extremity Soft Tissue Sarcoma: Adding to the Prognostic Meaning of Local Failure

Alessandro Gronchi, MD1, Rosalba Miceli, PhD2, Marco Fiore, MD1, Paola Collini, MD3, Laura Lozza, MD4, Federica Grosso, MD5, Luigi Mariani, MD2 and Paolo G. Casali, MD5

1 Department of Surgery, Istituto Nazionale per lo studio e la cura dei Tumori, via Venezian, 1, 20133, Milano, Italy
2 Department of Biostatistics, Istituto Nazionale per lo studio e la cura dei Tumori, via Venezian, 1, 20133, Milano, Italy
3 Department of Pathology, Istituto Nazionale per lo studio e la cura dei Tumori, via Venezian, 1, 20133, Milano, Italy
4 Department of Diagnostic Imaging and Radiotherapy, Istituto Nazionale per lo studio e la cura dei Tumori, via Venezian, 1, 20133, Milano, Italy
5 Department of Cancer Medicine, Istituto Nazionale per lo studio e la cura dei Tumori, via Venezian, 1, 20133, Milano, Italy

Correspondence: Address correspondence and reprint requests to: Alessandro Gronchi, MD; E-mail: alessandro.gronchi{at}istitutotumori.mi.it

Background: We explored the prognostic meaning of local relapse and surgical margins in adult soft tissue sarcoma of the extremities.

Methods: Out of a series of 1017 patients with extremity soft tissue sarcoma treated over 20 years, we picked a group of 238 patients operated on at our institution for their first local relapse: 88 after their primary operation performed at the same center and 150 elsewhere. At operation for relapse, margins were microscopically negative in 77% and 75% of patients, respectively. Median follow-up was 107 months.

Results: The 10-year mortality rate was 22% in the absence of local relapse, whereas in locally relapsing patients it was 54% and 43%, respectively, for patients first operated on at our institute and for those who were not. The hazard ratio of positive versus negative surgical margins was 1.7 for cause-specific death and 2.1 for distant metastases in patients first operated on at our institute, as opposed to 1.2 and 1.3 for the others.

Conclusions: Local relapse was an unfavorable prognostic factor. In the face of a consistent surgical policy for local relapse in a single-institution setting, patients relapsing after the first operation performed at our institution received rescue treatment less frequently than those previously operated on outside a referral center. This is likely due to an inherently higher tumor aggressiveness. In the presence of such a higher aggressiveness, the adequacy of surgical margins at operation for first relapse seemed more critical prognostically. This may have clinical and speculative implications.

Key Words: Sarcoma • Local recurrence • Limbs • Surgery • prognosis






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