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Impact of target area selection in (125) Iodine seed brachytherapy on locoregional recurrence in patients with non‐small cell lung cancer
BACKGROUND: Computed tomography (CT)‐guided percutaneous implantation of (125)Iodine radioactive seeds requires the precise arrangement of seeds by tumor shape. We tested whether selecting target areas, including subclinical areas around tumors, can influence locoregional recurrence in patients with...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
John Wiley & Sons Australia, Ltd
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5415452/ https://www.ncbi.nlm.nih.gov/pubmed/28217920 http://dx.doi.org/10.1111/1759-7714.12415 |
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author | Yan, Wei‐Liang Lv, Jin‐Shuang Guan, Zhi‐Yu Wang, Li‐Yang Yang, Jing‐Kui Liang, Ji‐Xiang |
author_facet | Yan, Wei‐Liang Lv, Jin‐Shuang Guan, Zhi‐Yu Wang, Li‐Yang Yang, Jing‐Kui Liang, Ji‐Xiang |
author_sort | Yan, Wei‐Liang |
collection | PubMed |
description | BACKGROUND: Computed tomography (CT)‐guided percutaneous implantation of (125)Iodine radioactive seeds requires the precise arrangement of seeds by tumor shape. We tested whether selecting target areas, including subclinical areas around tumors, can influence locoregional recurrence in patients with non‐small cell lung cancer (NSCLC). METHOD: We divided 82 patients with NSCLC into two groups. Target areas in group 1 (n = 40) were defined along tumor margins based on lung‐window CT. Target areas in group 2 (n = 42) were extended by 0.5 cm in all dimensions outside tumor margins. Preoperative plans for both groups were based on a treatment plan system, which guided (125) I seed implantation. Six months later, patients underwent chest CT to evaluate treatment efficacy (per Response Evaluation Criteria in Solid Tumors version 1). We compared locoregional recurrences between the groups after a year of follow‐up. We then used the treatment plan system to extend target areas for group 1 patients by 0.5 cm (defined as group 3 data) and compared these hypothetical group 3 planned seeds with the actual seed numbers used in group 1 patients. RESULTS: All patients successfully underwent implantation; none died during the follow‐up period. Recurrence was significantly lower in group 2 than in group 1 (P < 0.05). Group 1 patients and group 3 data significantly differed in seed numbers (P < 0.01). CONCLUSION: Our results imply that extending the implantation area for (125) I seeds can decrease recurrence risk by eradicating cancerous lymph‐duct blockades within the extended areas. |
format | Online Article Text |
id | pubmed-5415452 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | John Wiley & Sons Australia, Ltd |
record_format | MEDLINE/PubMed |
spelling | pubmed-54154522017-05-04 Impact of target area selection in (125) Iodine seed brachytherapy on locoregional recurrence in patients with non‐small cell lung cancer Yan, Wei‐Liang Lv, Jin‐Shuang Guan, Zhi‐Yu Wang, Li‐Yang Yang, Jing‐Kui Liang, Ji‐Xiang Thorac Cancer Original Articles BACKGROUND: Computed tomography (CT)‐guided percutaneous implantation of (125)Iodine radioactive seeds requires the precise arrangement of seeds by tumor shape. We tested whether selecting target areas, including subclinical areas around tumors, can influence locoregional recurrence in patients with non‐small cell lung cancer (NSCLC). METHOD: We divided 82 patients with NSCLC into two groups. Target areas in group 1 (n = 40) were defined along tumor margins based on lung‐window CT. Target areas in group 2 (n = 42) were extended by 0.5 cm in all dimensions outside tumor margins. Preoperative plans for both groups were based on a treatment plan system, which guided (125) I seed implantation. Six months later, patients underwent chest CT to evaluate treatment efficacy (per Response Evaluation Criteria in Solid Tumors version 1). We compared locoregional recurrences between the groups after a year of follow‐up. We then used the treatment plan system to extend target areas for group 1 patients by 0.5 cm (defined as group 3 data) and compared these hypothetical group 3 planned seeds with the actual seed numbers used in group 1 patients. RESULTS: All patients successfully underwent implantation; none died during the follow‐up period. Recurrence was significantly lower in group 2 than in group 1 (P < 0.05). Group 1 patients and group 3 data significantly differed in seed numbers (P < 0.01). CONCLUSION: Our results imply that extending the implantation area for (125) I seeds can decrease recurrence risk by eradicating cancerous lymph‐duct blockades within the extended areas. John Wiley & Sons Australia, Ltd 2017-02-20 2017-05 /pmc/articles/PMC5415452/ /pubmed/28217920 http://dx.doi.org/10.1111/1759-7714.12415 Text en © 2017 The Authors. Thoracic Cancer published by China Lung Oncology Group and John Wiley & Sons Australia, Ltd This is an open access article under the terms of the Creative Commons Attribution‐NonCommercial (http://creativecommons.org/licenses/by-nc/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes. |
spellingShingle | Original Articles Yan, Wei‐Liang Lv, Jin‐Shuang Guan, Zhi‐Yu Wang, Li‐Yang Yang, Jing‐Kui Liang, Ji‐Xiang Impact of target area selection in (125) Iodine seed brachytherapy on locoregional recurrence in patients with non‐small cell lung cancer |
title | Impact of target area selection in (125)
Iodine seed brachytherapy on locoregional recurrence in patients with non‐small cell lung cancer |
title_full | Impact of target area selection in (125)
Iodine seed brachytherapy on locoregional recurrence in patients with non‐small cell lung cancer |
title_fullStr | Impact of target area selection in (125)
Iodine seed brachytherapy on locoregional recurrence in patients with non‐small cell lung cancer |
title_full_unstemmed | Impact of target area selection in (125)
Iodine seed brachytherapy on locoregional recurrence in patients with non‐small cell lung cancer |
title_short | Impact of target area selection in (125)
Iodine seed brachytherapy on locoregional recurrence in patients with non‐small cell lung cancer |
title_sort | impact of target area selection in (125)
iodine seed brachytherapy on locoregional recurrence in patients with non‐small cell lung cancer |
topic | Original Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5415452/ https://www.ncbi.nlm.nih.gov/pubmed/28217920 http://dx.doi.org/10.1111/1759-7714.12415 |
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