Georgios Antonios Margonis1, Yuhree Kim1, Jason D Prescott1, Thuy B Tran2, Lauren M Postlewait3, Shishir K Maithel3, Tracy S Wang4, Douglas B Evans4, Ioannis Hatzaras5, Rivfka Shenoy5, John E Phay6, Kara Keplinger6, Ryan C Fields7, Linda X Jin7, Sharon M Weber8, Ahmed Salem8, Jason K Sicklick9, Shady Gad9, Adam C Yopp10, John C Mansour10, Quan-Yang Duh11, Natalie Seiser11, Carmen C Solorzano12, Colleen M Kiernan12, Konstantinos I Votanopoulos13, Edward A Levine13, George A Poultsides2, Timothy M Pawlik14. 1. Department of Surgery, The Johns Hopkins University School of Medicine, Baltimore, MD, USA. 2. Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA. 3. Department of Surgery, Emory University, Atlanta, GA, USA. 4. Department of Surgery, Medical College of Wisconsin, Milwaukee, WI, USA. 5. Department of Surgery, New York University School of Medicine, New York, NY, USA. 6. Department of Surgery, The Ohio State University, Columbus, OH, USA. 7. Department of Surgery, Washington University School of Medicine, St. Louis, MO, USA. 8. Department of General Surgery, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA. 9. Department of Surgery, University of California San Diego, San Diego, CA, USA. 10. Department of Surgery, University of Texas Southwestern Medical Center, Dallas, TX, USA. 11. Department of Surgery, University of California San Francisco, San Francisco, CA, USA. 12. Department of Surgery, Vanderbilt University, Nashville, TN, USA. 13. Department of Surgery, Wake Forest School of Medicine, Winston-Salem, NC, USA. 14. Department of Surgery, The Johns Hopkins University School of Medicine, Baltimore, MD, USA. tpawlik1@jhmi.edu.
Abstract
BACKGROUND: The influence of surgical margin status on long-term outcomes of patients undergoing adrenal resection for ACC remains not well defined. We studied the impact of surgical tumor margin status on recurrence-free survival (RFS) and overall survival (OS) of patients undergoing resection for ACC. METHODS: A total of 165 patients who underwent adrenal resection for ACC and met inclusion criteria were identified form a multi-institutional database. Clinicopathological data, pathologic margin status, and long-term outcomes were assessed. Patients were stratified into two groups based on margin status: R0 (margin >1 mm) versus R1. RESULTS: R0 resection was achieved in 126 patients (76.4 %), whereas 39 patients (23.6 %) had an R1 resection. Median and 5-year OS for patients undergoing R0 resection were 96.3 months and 64.8 % versus 25.1 months and 33.8 % for patients undergoing an R1 resection (both p < 0.001). On multivariable analysis, surgical margin status was an independent predictor of worse OS (hazard ratio [HR] 2.22, 95 % confidence interval [CI] 1.03-4.77; p = 0.04). The incidence of recurrence also differed between the two groups; 5-year RFS was 30.3 % among patients with an R0 resection versus 13.8 % among patients who had an R1 resection (p = 0.03). Lymph node metastasis (N1) was an independent predictor of RFS (HR 2.70, 95 % CI 1.04-6.99; p = 0.04). CONCLUSIONS: A positive margin after ACC resection was associated with worse long-term survival. Patient selection and an emphasis on surgical technique to achieve R0 margins are pivotal to optimizing the best chance for long-term outcome among patients with ACC.
BACKGROUND: The influence of surgical margin status on long-term outcomes of patients undergoing adrenal resection for ACC remains not well defined. We studied the impact of surgical tumor margin status on recurrence-free survival (RFS) and overall survival (OS) of patients undergoing resection for ACC. METHODS: A total of 165 patients who underwent adrenal resection for ACC and met inclusion criteria were identified form a multi-institutional database. Clinicopathological data, pathologic margin status, and long-term outcomes were assessed. Patients were stratified into two groups based on margin status: R0 (margin >1 mm) versus R1. RESULTS: R0 resection was achieved in 126 patients (76.4 %), whereas 39 patients (23.6 %) had an R1 resection. Median and 5-year OS for patients undergoing R0 resection were 96.3 months and 64.8 % versus 25.1 months and 33.8 % for patients undergoing an R1 resection (both p < 0.001). On multivariable analysis, surgical margin status was an independent predictor of worse OS (hazard ratio [HR] 2.22, 95 % confidence interval [CI] 1.03-4.77; p = 0.04). The incidence of recurrence also differed between the two groups; 5-year RFS was 30.3 % among patients with an R0 resection versus 13.8 % among patients who had an R1 resection (p = 0.03). Lymph node metastasis (N1) was an independent predictor of RFS (HR 2.70, 95 % CI 1.04-6.99; p = 0.04). CONCLUSIONS: A positive margin after ACC resection was associated with worse long-term survival. Patient selection and an emphasis on surgical technique to achieve R0 margins are pivotal to optimizing the best chance for long-term outcome among patients with ACC.
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