Aim: This study aimed to evaluate the feasibility, safety, and clinical efficacy of computed tomography (CT)-guided I seed interstitial implantation in patients with secondary adrenal carcinoma.
Materials And Methods: Twenty patients with secondary adrenal carcinoma received CT-guided I seed interstitial implantation. A three-dimensional treatment planning system was used to calculate the dose distribution before I seed interstitial implantation. CT scans were performed every 2 months after the treatment to evaluate local therapeutic efficacy according to the Response Evaluation Criteria in Solid Tumors.
Results: The mean follow-up time was 23.65 months (5-102 months). The mean maximum tumor diameter was 34.16 ± 18.94 mm at the beginning of follow-up and 14.42 ± 24.07 mm at the end of follow-up. Eleven patients had complete response (CR), seven had partial response (PR), one had stable disease, and one had progressive disease. Local control rate (CR + PR) was 90% (18/20). The median survival time was 19 months (5-71 months). The 1-, 2-, 3-, and 5-year overall survival rates were 83.70%, 46.8%, 20.80%, and 20.80%, respectively.
Conclusion: CT-guided I radioactive seed interstitial implantation may be a feasible, safe, effective, and minimally invasive treatment for secondary adrenal carcinoma.
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