Epidemiology, treatment and outcomes of primary renal sarcomas in adult patients
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View abstract on PubMed
Summary
This summary is machine-generated.Renal sarcomas are rare kidney cancers with varied presentations and outcomes. Surgical resection is the primary treatment, with survival influenced by factors like age, sex, and tumor characteristics.
Area Of Science
- Oncology
- Urologic Oncology
- Cancer Epidemiology
Background
- Renal sarcomas are rare malignancies comprising approximately 0.25% of all kidney cancers.
- These tumors exhibit significant heterogeneity, encompassing 43 distinct histiotypes with varying clinical behaviors.
Purpose Of The Study
- To evaluate the epidemiology, clinical presentation, treatment modalities, and overall survival (OS) of adult patients diagnosed with renal sarcoma.
- To identify factors associated with improved outcomes in this patient population.
Main Methods
- Utilized the Surveillance, Epidemiology, and End Results (SEER) and National Cancer Database (NCDB) from 2004 to 2016.
- Calculated average annual age-adjusted incidence rates (AAIR) and average annual percentage change (AAPC).
- Performed multivariable analysis to identify independent predictors of overall survival.
Main Results
- The average annual age-adjusted incidence rate (AAIR) for renal sarcoma remained stable (0.53 cases/million) with no significant change over the study period.
- Leiomyosarcoma and malignant rhabdoid tumors were the most common histiotypes.
- Patients frequently presented with advanced local disease (T3/T4 stages) or distant metastases (29.1%), with surgical resection being the predominant treatment (81.6%).
- Factors independently associated with longer OS included younger age, female sex, lower comorbidity index, low T stage, negative surgical margins, absence of tumor necrosis or distant metastases, and leiomyosarcoma histiotype.
- Treatment efficacy differed significantly across sarcoma histiotypes.
Conclusions
- Renal sarcomas are a diverse group of tumors behaving similarly to soft-tissue sarcomas.
- Surgical resection remains the cornerstone of therapy, aligning with renal cancer treatment guidelines.
- Prognosis is influenced by a combination of patient-related and tumor-specific factors, highlighting the need for individualized treatment approaches.
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