title: [Early-stage carcinoma of the external auditory canal treated by intracavitary irradiation with HDR 192Ir-RALS: a case report].
abstract: We report a case of early-stage carcinoma of the external auditory canal treated by intracavitary irradiation with high-dose-rate (HDR) 192Ir-RALS after 40 Gy by external irradiation. We made an applicator that was inserted into the external auditory canal for the intracavitary irradiation, using a 9 Fr silicone catheter and resin. The total intracavitary radiation dosages were 20 Gy/8 Fr/4 weeks. No severe side effects were noted, and the tumor disappeared. RALS may be indicated for early carcinoma of the external auditory canal for its efficacy and lack of side effects.
authors.affiliation: Department of Radiology, Kurume University School of Medicine.
authors.forename: Gen
authors.initials: G
authors.lastname: Suzuki
authors.forename: Naofumi
authors.initials: N
authors.lastname: Hayabuchi
authors.forename: Seiji
authors.initials: S
authors.lastname: Kurata
authors.forename: Masatora
authors.initials: M
authors.lastname: Aoki
authors.forename: Tadashi
authors.initials: T
authors.lastname: Nakashima
mesh_terms: D001918:Brachytherapy / Q000295:instrumentation / Q000379:methods*; D002277:Carcinoma / Q000532:radiotherapy*; D004424:Ear Canal; D004428:Ear Neoplasms / Q000532:radiotherapy*; D005260:Female; D006801:Humans; D007496:Iridium Radioisotopes / Q000627:therapeutic use*; D008875:Middle Aged; D011879:Radiotherapy Dosage; D016896:Treatment Outcome
chemical_list: D007496:Iridium Radioisotopes