Objective: to evaluate the short- and medium-term clinical effects of 125I seed implantation on recurrent or metastatic head and neck cancers.
Methods: Thirty patients with recurrent or metastatic head and neck cancers after operation, radiotherapy, or chemotherapy, totaling 421 lesions 4.2 (2-9) cm in diameter, 23 males and 12 females, aged 56 (39-71), underwent implantation of 12-70 125I seeds (on average 33 per person) under the guidance of CT, ultrasonography, or endoscopy with an interval of 1 cm between any 2 seeds with the radioactive activity per seed of 29.6 MBq and matched peripheral dose of 90-160 Gy. Follow-up was conducted for 13 (4-40) months to observe the local control rate, overall survival rate, pain relief, and clinical complications.
Results: Follow-up 4 months later showed that 24 of the 42 lesions obtained complete remission, 11 obtained partial remission, 5 no change, and 2 progress of disease, with a clinical response rate of 83.3% (CR+PR). The overall 1-, 2-, and 3-year survival rates were 88.4%, 72.4%, and 45.2% respectively with a median survival time of 31 months. The pain relief rate was 73.4% (17/23). The long-term complications included hyperpigmentation at operative sites (n=4), insensible feeling on lateral cheek (n=3), dryness of oral cavity (n=2), and headache combined with infection (n=1).
Conclusion: Relieving the pain, improving the life quality, CT guided radioactive 125I seed implantation is a simple, safe, and effective method in treating recurrent or metastatic head and neck cancer with minimal damage and few complications.
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Oncol Ther
January 2025
Coordinator of the International Head and Neck Scientific Group, Padua, Italy.
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