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S.H. Kim



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    P2.08 - Poster Session 2 - Radiotherapy (ID 198)

    • Event: WCLC 2013
    • Type: Poster Session
    • Track: Radiation Oncology + Radiotherapy
    • Presentations: 1
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      P2.08-015 - Stereotactic body radiotherapy with Helical tomotherapy for lung tumor: Treatment outcome and feasibility (ID 1758)

      09:30 - 09:30  |  Author(s): S.H. Kim

      • Abstract

      Background
      In this study we evaluated the feasibility and outcome of stereotactic body radiotherapy (SBRT) for lung tumors treated with helical tomotherapy.

      Methods
      Between December 2007 and January 2013, 26 Patients with a total of 49 lung tumors were treated with helical tomotherapy at a median 75 Gy of 10 fractions over 2 weeks. Thirteen lung lesions of primary lung tumors (group 1) and 36 of recurrent or metastatic lung tumors (group 2) were analyzed. Three patients received re-SBRT due to local recurrence after first SBRT were included. (Total 29 cases were analyzed). Radiation pneumonitis was graded according to the Common Terminology Criteria for Adverse Events V 4.0.

      Results
      The patients’ age was median 72 years (range, 47-82). Median follow up was 16 months (range, 2-57 months). Total 13 cases (45%) showed progressive disease after SBRT, and one of them was distant metastasis. Of 12 thoracic recurrences, in-field recurrences were noted in 5 patients and out-field recurrences in 7 patients. In group 1 (13 cases), there were 3 recurrences with 1 in-field thoracic recurrence, 1 out-field thoracic recurrence and 1 distant metastasis. Grade≥2 radiation pneumonitis was noted in 8 patients (30%). One patient died due to radiation pneumonitis at 2 months follow up after second SBRT.

      Conclusion
      The preliminary findings of our study suggest SBRT with helical tomotherapy is feasible for lung tumor treatment. But further studies with more patients and longer follow-up duration are required.

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    P3.07 - Poster Session 3 - Surgery (ID 193)

    • Event: WCLC 2013
    • Type: Poster Session
    • Track: Surgery
    • Presentations: 1
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      P3.07-035 - Benefit of preoperative localization using fragmented platinum microcoil for fluoroscopy-aided thoracoscopic resection of solitary pulmonary nodules (ID 2738)

      09:30 - 09:30  |  Author(s): S.H. Kim

      • Abstract

      Background
      Preoperative localization is necessary to perform thoracoscopic resection of small or deeply located solitary pulmonary nodules (SPNs). We recently developed a new localization technique using a self-made, fragmented platinum microcoil, and retrospectively compared the effectiveness of our technique with that of lipiodol.

      Methods
      Fifty two patients underwent thoracoscopic pulmonary wedge resections for 57 SPNs between January 2006 and June 2013. Self-made, fragmented platinum microcoils (Easimarker) were targeted to localize 30 SPNs [17 solid nodules, and 13 ground glass opacities (GGOs)] in 28 patients (Group A), and lipiodol was injected in 27 SPNs (17 solid nodules, and 10 GGOs) of 22 patients (Group B). Preoperative localization using both targeting materials was performed into, or just around the pulmonary lesions on the day of thoracoscopic surgery in the room of chest CT scanner. Localized SPNs were then, wedgely resected using fluoroscopy-aided thoracoscopic surgery (FATS). The intraoperative fluoroscopic exposure (radiation) time, diagnostically detecting rate of pathologic lesions, and other clinical data were collected.

      Results
      Mean size and depth of SPNs in group A and B were 10.6 ± 4.7 mm (range: 0.9 to 23) versus 7.9 ± 4.9 mm (1 to 21), and 10.9 ± 7.9 mm (1 to 30) versus 9.7 ± 8.4mm (1 to 28.2), respectively. CT-guided localizations were successfully performed in both groups. No mortality and major morbidity were observed in both groups. All lesions in both groups were completely resected and diagnosed histopathologically. The intraoperative fluoroscopic exposure time of group A (55.0±40.8 seconds) was significantly shorter than that of group B (105.7±109.0 seconds).

      Conclusion
      Our preoperative localization procedure using fragmented platinum microcoils appears to be effective and feasible in that it has shorter intraoperative time, less radiation exposure, and better accuracy of detecting SPNs. Once inserted fragmented microcoil into the pulmonary lesions stays firmly and more visible radiologically, through lipiodol tends to diperse outside the targeting lesion.