title: Primary adenoid cystic carcinoma of the nasolacrimal duct treated with proton beam therapy.
abstract: Primary malignant tumors of the lacrimal passage, particularly of the nasolacrimal duct, are rare. We describe a 72-year-old woman who presented with lacrimation 5 years previously. She had pain and bloody and purulent lacrimation, and a mass was identified in the inferior meatus. Accordingly, she was diagnosed with primary adenoid cystic carcinoma of the nasolacrimal duct. She was treated with proton beam therapy and showed a favorable response. Owing to the long-term risks of recurrence and distant metastasis, adenoid cystic carcinoma requires sufficient follow-up.
authors.affiliation: Department of Otorhinolaryngology, Toho University, Tokyo, Japan. Electronic address: wadakota@med.toho-u.ac.jp.
authors.forename: Kota
authors.initials: K
authors.lastname: Wada
authors.affiliation: Department of Otorhinolaryngology, Toho University, Tokyo, Japan.
authors.forename: Chiaki
authors.initials: C
authors.lastname: Arai
authors.affiliation: Department of Otorhinolaryngology, Toho University, Tokyo, Japan.
authors.forename: Toshihito
authors.initials: T
authors.lastname: Suda
authors.affiliation: Department of Otorhinolaryngology, Toho University, Tokyo, Japan.
authors.forename: Masato
authors.initials: M
authors.lastname: Nagaoka
authors.affiliation: Department of Otorhinolaryngology, Toho University, Tokyo, Japan.
authors.forename: Eiji
authors.initials: E
authors.lastname: Shimura
authors.affiliation: Department of Otorhinolaryngology, Toho University, Tokyo, Japan.
authors.forename: Sawako
authors.initials: S
authors.lastname: Yanagisawa
authors.affiliation: Department of Otorhinolaryngology, Toho University, Tokyo, Japan.
authors.forename: Hideo
authors.initials: H
authors.lastname: Edamatsu
mesh_terms: D000368:Aged; D003528:Carcinoma, Adenoid Cystic / Q000175:diagnosis / Q000532:radiotherapy*; D005134:Eye Neoplasms / Q000175:diagnosis / Q000532:radiotherapy*; D005260:Female; D006801:Humans; D009301:Nasolacrimal Duct / Q000000981:diagnostic imaging / Q000473:pathology*; D061766:Proton Therapy; D011859:Radiography
keywords: Adenoid cystic carcinoma; Lacrimal passage; Nasolacrimal duct; Proton beam therapy