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(P059) Trends in the Utilization of Radiotherapy in the Management of Renal Cell Carcinoma

April 30, 2015
Publication
Article
OncologyOncology Vol 29 No 4_Suppl_1
Volume 29
Issue 4_Suppl_1
Conference|Annual Meeting of the American Radium Society (ARS)

There has been a decrease in the use of radiotherapy for patients with localized RCC, although patients with more aggressive disease were more likely to receive radiation. Modern trials are needed to better identify the role of radiation in the management of these patients.

Talha Shaikh, MD, Elizabeth A. Handorf, PhD, Colin Murphy, MD, Alexander Kutikov, MD, Robert G. Uzzo, MD, Mark Hallman, MD, PhD, Eric M. Horwitz, Marc C. Smaldone, MD, MSHP; Fox Chase Cancer Center

PURPOSE: The role of radiotherapy in the management of renal cell carcinoma (RCC) has been limited due to the belief that these tumors are relatively radioresistant. More recently, retrospective series have demonstrated good local control in patients undergoing radiation. We examined the temporal trends and patterns of use of radiotherapy in patients with localized RCC.

MATERIALS AND METHODS: Patients diagnosed with RCC were identified using the National Cancer Data Base. Our primary objective was to describe the temporal trends in the utilization of radiotherapy. Our second objective was to identify patient and treatment factors associated with receipt of radiation. Data were analyzed using the chi-square and Cochran-Armitage tests for trend.

RESULTS: A total of 330,426 were diagnosed with RCC between 1998 and 2010, with 18,522 (5.6%) patients receiving radiotherapy. After excluding patients with metastatic disease, 280,208 patients were diagnosed with localized RCC, with 3,552 (1.3%) patients receiving radiation therapy to the primary site. Factors associated with receipt of radiation included age > 71 years, no surgery (P < .0001), chemotherapy use (P < .0001), higher stage (P < .0001), higher grade (P < .0001), positive nodes (P < .0001), and sarcomatoid histology (P < .0001). A total of 257,304 patients underwent surgical resection in this cohort. Of these patients, 2,265 (0.9%) received adjuvant radiation. Patients receiving adjuvant radiotherapy were more likely to receive chemotherapy (P < .0001), have a higher stage (P < .0001), have a higher grade (P < .0001), have positive nodes (P < .0001), and have sarcomatoid histology (P < .0001).

CONCLUSIONS: There has been a decrease in the use of radiotherapy for patients with localized RCC, although patients with more aggressive disease were more likely to receive radiation. Modern trials are needed to better identify the role of radiation in the management of these patients.

Proceedings of the 97th Annual Meeting of the American Radium Society- americanradiumsociety.org

Articles in this issue

(P005) Ultrasensitive PSA Identifies Patients With Organ-Confined Prostate Cancer Requiring Postop Radiotherapy
(P001) Disparities in the Local Management of Breast Cancer in the United States According to Health Insurance Status
(P002) Predictors of CNS Disease in Metastatic Melanoma: Desmoplastic Subtype Associated With Higher Risk
(P003) Identification of Somatic Mutations Using Fine Needle Aspiration: Correlation With Clinical Outcomes in Patients With Locally Advanced Pancreatic Cancer
(P004) A Retrospective Study to Assess Disparities in the Utilization of Intensity-Modulated Radiotherapy (IMRT) and Proton Therapy (PT) in the Treatment of Prostate Cancer (PCa)
(S001) Tumor Control and Toxicity Outcomes for Head and Neck Cancer Patients Re-Treated With Intensity-Modulated Radiation Therapy (IMRT)-A Fifteen-Year Experience
(S003) Weekly IGRT Volumetric Response Analysis as a Predictive Tool for Locoregional Control in Head and Neck Cancer Radiotherapy 
(S004) Combination of Radiotherapy and Cetuximab for Aggressive, High-Risk Cutaneous Squamous Cell Cancer of the Head and Neck: A Propensity Score Analysis
(S005) Radiotherapy for Carcinoma of the Hypopharynx Over Five Decades: Experience at a Single Institution
(S002) Prognostic Value of Intraradiation Treatment FDG-PET Parameters in Locally Advanced Oropharyngeal Cancer
(P006) The Role of Sequential Imaging in Cervical Cancer Management
(P008) Pretreatment FDG Uptake of Nontarget Lung Tissue Correlates With Symptomatic Pneumonitis Following Stereotactic Ablative Radiotherapy (SABR)
(P009) Monte Carlo Dosimetry Evaluation of Lung Stereotactic Body Radiosurgery
(P010) Stereotactic Body Radiotherapy for Treatment of Adrenal Gland Metastasis: Toxicity, Outcomes, and Patterns of Failure
(P011) Stereotactic Radiosurgery and BRAF Inhibitor Therapy for Melanoma Brain Metastases Is Associated With Increased Risk for Radiation Necrosis
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