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Primary anatomical site as a prognostic factor for pleomorphic liposarcoma.

Hea Gie Lee1, Sarah Aurit2, Peter Silberstein3

  • 1Creighton University School of Medicine, 2500 California Plaza, Omaha, NE, 68178, USA.

Journal of Cancer Research and Clinical Oncology
|April 6, 2020
PubMed
Summary

Pleomorphic liposarcoma (PLS) survival varies by anatomical site, with head/neck showing better outcomes than retroperitoneum. Age and radiation therapy significantly impact patient survival in this aggressive cancer.

Keywords:
NCDBPleomorphic liposarcomaPrimary anatomical siteRadiationSurvival

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Area of Science:

  • Oncology
  • Surgical Pathology
  • Medical Statistics

Background:

  • Pleomorphic liposarcoma (PLS) is an aggressive, high-grade soft tissue sarcoma, comprising less than 15% of all liposarcomas.
  • Typically originating in the retroperitoneum and proximal upper extremities, current staging relies on grade, size, and fascial relation.
  • Understanding prognostic factors beyond staging is crucial for patient management.

Purpose of the Study:

  • To identify statistically significant prognostic factors for pleomorphic liposarcoma (PLS).
  • To analyze the impact of primary anatomical site, patient age, and radiation therapy on PLS survival.
  • To provide data for improved risk stratification and treatment strategies for PLS patients.

Main Methods:

  • Analysis of 750 patients diagnosed with pleomorphic liposarcoma from the National Cancer Database.
  • Utilized Kaplan-Meier survival analysis, log-rank tests, and Cox proportional hazards models.
  • Compared survival rates based on primary anatomical site, age, comorbidities, and radiation treatment (neoadjuvant/adjuvant).

Main Results:

  • The lower limb/hip was the most common primary site; head/neck showed the highest 10-year survival (50%), while retroperitoneum/abdomen had the lowest (18.4%).
  • Sites including lower limb/hip, pelvis, and retroperitoneum/abdomen showed decreased risk of death compared to the thorax/lung.
  • Both adjuvant and neoadjuvant radiation improved survival, while increased age correlated with a higher risk of death.

Conclusions:

  • Primary anatomical site, patient age, Charlson-Deyo Comorbidity Index, and the use of neoadjuvant/adjuvant radiation are significant prognostic factors for PLS.
  • These factors offer valuable insights for predicting outcomes in pleomorphic liposarcoma patients.
  • Further research into site-specific treatments and management of comorbidities may improve PLS patient survival.