title: Narrow band imaging for detecting metachronous superficial oropharyngeal and hypopharyngeal squamous cell carcinomas after chemoradiotherapy for head and neck cancers.
abstract: We present two cases of metachronous superficial squamous cell carcinomas at oropharyngeal and hypopharyngeal mucosal sites after chemoradiotherapy for head and neck cancers. These were detected by narrow band imaging combined with a magnifying gastrointestinal endoscopy. In one case, we successfully removed the tumor using endoscopic submucosal dissection. Narrow band imaging combined with magnifying gastrointestinal endoscopy illustrated well-demarcated brownish area and scattered foci of microvascular proliferation. Thus, it may serve as an ideal surveillance mode after chemoradiotherapy for head and neck cancers.
authors.affiliation: Department of Gastroenterology, Kitasato University School of Medicine, Sagamihara, Japan. ckatada@med.kitasato-u.ac.jp
authors.forename: Chikatoshi
authors.initials: C
authors.lastname: Katada
authors.forename: Meijin
authors.initials: M
authors.lastname: Nakayama
authors.forename: Satoshi
authors.initials: S
authors.lastname: Tanabe
authors.forename: Wasaburo
authors.initials: W
authors.lastname: Koizumi
authors.forename: Takashi
authors.initials: T
authors.lastname: Masaki
authors.forename: Masahiko
authors.initials: M
authors.lastname: Takeda
authors.forename: Makito
authors.initials: M
authors.lastname: Okamoto
authors.forename: Katsunori
authors.initials: K
authors.lastname: Saigenji
mesh_terms: D000368:Aged; D002294:Carcinoma, Squamous Cell / Q000175:diagnosis* / Q000473:pathology; D003131:Combined Modality Therapy; D016099:Endoscopy, Gastrointestinal; D004938:Esophageal Neoplasms / Q000628:therapy; D006258:Head and Neck Neoplasms / Q000628:therapy*; D006801:Humans; D007012:Hypopharyngeal Neoplasms / Q000175:diagnosis* / Q000473:pathology; D007089:Image Enhancement; D008297:Male; D008875:Middle Aged; D016609:Neoplasms, Second Primary / Q000175:diagnosis*; D009959:Oropharyngeal Neoplasms / Q000175:diagnosis* / Q000473:pathology