title: Localized extremity soft tissue sarcoma: improved knowledge with unchanged survival over time.
abstract: OBJECTIVE
  The objective of this study was to define whether survival of patients with extremity soft tissue sarcoma (STS), stratified for known risk factors, has improved over the last 20 years.
  
  
  METHODS
  From January 1982 to December 2001, 1,706 patients with primary and recurrent STS of the extremities were treated at our institution and were prospectively followed. From this cohort, we selected 1,261 patients who underwent complete macroscopic resection and had one of the following histopathologies: fibrosarcoma, liposarcoma, leiomyosarcoma, malignant fibrous histiocytoma, or synovial sarcoma. Median follow-up was 55 months. Patient, tumor, and treatment factors were analyzed as prognostic factors.
  
  
  RESULTS
  The 5-year disease-specific actuarial survival was 79% (78% for patients treated from 1982 to 1986, 79% for patients treated from 1986 to 1991, 79% for patients treated from 1992 to 1996, and 85% for patients treated from 1997 to 2001; P = not significant). For high-risk patients (high-grade, > 10 cm, deep tumors; n = 247), 5-year disease-specific survival was 51% (50% for patients treated from 1982 to 1986, 45% for patients treated from 1986 to 1991, 52% for patients treated from 1992 to 1996, and 61% for patients treated from 1997 to 2001; P = not significant). Tumor depth, size, grade, microscopic margin status, patient age, presentation status (primary tumor versus local recurrence), location (proximal versus distal), and certain histopathologic subtypes were significant prognostic factors for disease-specific survival on multivariate analysis; however, time period of treatment was not.
  
  
  CONCLUSIONS
  Prognosis of patients with extremity STS, stratified for known risk factors, has not improved over the last 20 years, indicating that current therapy has reached the limits of efficacy.
authors.affiliation: Department of Surgery, Memorial Sloan-Kettering Cancer Center, 1275 York Ave, New York, NY 10021, USA.
authors.forename: Jürgen
authors.initials: J
authors.lastname: Weitz
authors.forename: Christina R
authors.initials: CR
authors.lastname: Antonescu
authors.forename: Murray F
authors.initials: MF
authors.lastname: Brennan
mesh_terms: D000328:Adult; D000368:Aged; D000704:Analysis of Variance; D017024:Chemotherapy, Adjuvant; D015331:Cohort Studies; D003131:Combined Modality Therapy; D018572:Disease-Free Survival; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D035002:Lower Extremity; D008297:Male; D008875:Middle Aged; D009367:Neoplasm Staging; D019637:Orthopedic Procedures / Q000379:methods; D011336:Probability; D016016:Proportional Hazards Models; D018714:Radiotherapy, Adjuvant; D012189:Retrospective Studies; D018570:Risk Assessment; D012307:Risk Factors; D012509:Sarcoma / Q000401:mortality* / Q000473:pathology / Q000628:therapy*; D012983:Soft Tissue Neoplasms / Q000401:mortality* / Q000473:pathology / Q000628:therapy*; D016019:Survival Analysis; D016896:Treatment Outcome; D034941:Upper Extremity