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High dose rate brachytherapy using molds after chemoradiotherapy for oral cavity cancer

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Japanese Journal of Radiology Aims and scope Submit manuscript

Abstract

Purpose

The aim of this study was to investigate the role of the combined use of customized molds and a high dose rate (HDR) remote afterloading brachytherapy apparatus with a 192Ir microsource in the treatment of superficial oral carcinomas after chemoradiotherapy.

Materials and methods

Nine patients with oral squamous cell carcinoma who were treated using this combined technique were analyzed retrospectively. The primary sites of the tumors were the mouth floor, gingiva, and soft palate. For each patient, a customized mold was fabricated in which 2–3 afterloading catheters were placed for the 192Ir source. Three to eight fractions of 3 Gy, 5 mm below the mold surface, were given following external radiotherapy of 24–50 Gy/2 Gy combined with chemotherapy (peplomycin or taxotere). The total dose of HDR brachytherapy ranged from 9 to 24 Gy.

Results

The 2-year local control probability was 100% and the 2-year cause-specific survival rate was 100%. No serious complications (i.e., ulcer or bone exposure) have been observed thus far during the follow-up period of 29–120 months.

Conclusion

HDR brachytherapy using the mold technique after chemoradiotherapy is a safe and excellent method for selected early and superficial oral cavity cancers.

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Acknowledgments

We would like to acknowledge Mr. Yasuji Sugiura, Osaka Rosai Hospital, for fabricating the excellent mold applicators.

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Authors and Affiliations

  1. Department of Radiation Oncology, Osaka Rosai Hospital, 1179-3 Nagasone-cyo, Kita-ku, Sakai, Osaka, Japan

    Masashi Chatani, Kazuki Tsuboi, Masayuki Yagi, Kanta Fujiwara & Rika Tachimoto

  2. Oral Surgery, Osaka Rosai Hospital, 1179-3 Nagasone-cyo, Kita-ku, Sakai, Osaka, Japan

    Hideo Yoshioka

Authors
  1. Masashi Chatani
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  2. Kazuki Tsuboi
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  3. Masayuki Yagi
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  4. Kanta Fujiwara
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  5. Rika Tachimoto
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  6. Hideo Yoshioka
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Corresponding author

Correspondence to Masashi Chatani.

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Chatani, M., Tsuboi, K., Yagi, M. et al. High dose rate brachytherapy using molds after chemoradiotherapy for oral cavity cancer. Jpn J Radiol 30, 40–44 (2012). https://doi.org/10.1007/s11604-011-0005-z

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  • DOI: https://doi.org/10.1007/s11604-011-0005-z

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