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- W2921635260 abstract "Purpose Pulmonary seed emboli to the chest may occur after permanent prostate brachytherapy (PPB). The purpose of this study is to analyze factors associated with seed migration to the chest in a large series of PPB patients from a single institution undergoing implant with either loose seeds (LS), mixed loose and stranded seeds (MS), or exclusively stranded seeds in an absorbable vicryl suture (VS). Methods and Materials Between May 1998 and July 2015, a total of 1000 consecutive PPB patients with postoperative diagnostic chest x-rays at 4 months after implant were analyzed for seed migration. Patients were grouped based on seed implant technique: LS = 391 (39.1%), MS = 43 (4.3%), or VS = 566 (56.6%). Univariate and multivariate analysis were performed using Cox proportional hazards regression models to determine predictors of seed migration. Results Overall, 18.8% of patients experienced seed migration to the chest. The incidence of seed migration per patient was 45.5%, 11.6%, and 0.9% (p < 0.0001), for patients receiving LS, MS, or VS PPB, respectively. The right and left lower lobes were the most frequent sites of pulmonary seed migration. On multivariable analysis, planimetry volume (p = 0.0002; HR = 0.7 per 10 cc [0.6–0.8]), number of seeds implanted (p < 0.0001, HR = 2.4 per 25 seeds [1.7–3.4]), LS implant (p < 0.0001, HR = 15.9 [5.9–42.1]), and MS implant (p = 0.001, HR = 7.9 [2.3–28.1]) were associated with seed migration to the chest. Conclusions In this large series, significantly higher rates of seed migration to the chest are observed in implants using any LS with observed hazard ratios of 15.9 and 7.9 for LS and MS respectively, as compared with implants using solely stranded seeds." @default.
- W2921635260 created "2019-03-22" @default.
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- W2921635260 date "2019-05-01" @default.
- W2921635260 modified "2023-10-16" @default.
- W2921635260 title "Reducing seed migration to near zero with stranded-seed implants: Comparison of seed migration rates to the chest in 1000 permanent prostate brachytherapy patients undergoing implants with loose or stranded seeds" @default.
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- W2921635260 doi "https://doi.org/10.1016/j.brachy.2019.01.007" @default.
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