%0 Journal Article %T A retrospective multicenter study of carbonŠ\ion radiotherapy for external auditory canal and middle ear carcinomas %A Hiroaki Ikawa %A Hiroaki Suefuji %A JunŠ\ichi Saitoh %A Kazuhiko Hayashi %A Kenji Nemoto %A Masashi Koto %A Ryo Takagi %A Tadashi Kamada %A Takashi Nakano %A Tatsuya Ohno %A Tomoaki Okimoto %A Yoshiyuki Shioyama %A Yusuke Demizu %J Archive of "Cancer Medicine". %D 2019 %R 10.1002/cam4.1830 %X We conducted a retrospective multicenter study to assess the clinical outcomes of carbonŠ\ion radiotherapy (CIRT) for head and neck malignancies (Japan CarbonŠ\Ion Radiation Oncology Study Group [JŠ\CROS] study: 1402 HN). We aimed to evaluate the safety and efficacy of CIRT in patients with external auditory canal (EAC) and middle ear (ME) carcinomas %K adenoid cystic carcinoma %K carbonŠ\ion radiotherapy %K carcinoma %K external auditory canal %K middle ear %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6346229/