Abstract
Adrenocortical carcinoma (ACC) is a rare and aggressive malignancy for which surgery is the mainstay of treatment and for which adjuvant radiation is infrequently employed; however, small, single-institution series suggest adjuvant radiation may improve outcomes. All patients with non-metastatic ACC treated with either surgery alone or surgery followed by adjuvant radiation were identified in the 2004-2013 National Cancer Database. Factors associated with receipt of radiation and the impact of adjuvant radiation on survival were determined by multivariable analysis. Of 1184 patients, 171 (14.4%) received adjuvant radiation. Patient demographics were similar between the two groups, but those receiving radiation were more likely to have had positive margins following surgery (37.4 vs. 14.6%; p < 0.001), evidence of vascular invasion (14.0 vs. 5.1%; p = 0.05), and receive concurrent chemotherapy (57.3 vs. 28.8%; p < 0.001). After adjustment for tumor and other treatment factors, only positive margins following surgery was associated with an increased likelihood of receiving adjuvant radiation (odds ratio 3.84, 95% confidence interval [CI] 1.95-7.56). Radiation therapy did not confer a difference in median overall survival in the g...Continue Reading
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