Risa Tona

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BACKGROUND The purpose of this study was to determine whether pretreatment 18F-fluorodeoxyglucose-positron emission tomography (18F-FDG PET/CT) volume-based parameters, such as metabolic tumor volume and total lesion glycolysis, add more prognostic information in patients with oropharyngeal squamous cell carcinoma (SCC). METHODS The subjects were 47(More)
BACKGROUNDS A p16 protein is known to be overexpressed in human papillomavirus-positive head and neck squamous cell carcinoma specimens. p53 is a tumor suppressor protein detectable by immunohistochemistry in carcinogen-associated head and neck squamous cell carcinoma as a result of gene mutations. The purpose of this study is to investigate the prognostic(More)
BACKGROUND The efficacy of posttreatment surveillance (18) F-fluorodeoxyglucose positron emission tomography ((18) F-FDG PET)/CT was evaluated in patients with head and neck squamous cell carcinoma (HNSCC). METHODS The subjects were 158 patients with HNSCC who underwent PET/CT after definitive treatment. PET/CT detection of subclinical recurrence or a(More)
CONCLUSION Rapidly progressive bilateral sensorineural hearing loss (SNHL) often develops as a symptom of intracranial diseases or systemic vasculitis. For early diagnosis and treatment of these potentially fatal diseases, a history of hearing deterioration within 2 months and associated symptoms may be important. OBJECTIVES To reveal clinical features(More)
Primary angiosarcoma is a rare disease with a poor prognosis. It most commonly arises in the head and neck region; localization in the deep soft tissue of the neck is extremely rare. We herein present a case of angiosarcoma derived from the right internal jugular vein. A 79-year-old man presented with a 1-month history of a growing right neck mass. Computed(More)
OBJECTIVE Kawasaki disease (KD) is an acute multisystemic vasculitis of unknown etiology that occurs in infants and children. Retropharyngeal cellulitis has been reported as a rare manifestation of KD. This study investigated the frequency and characteristics of patients with KD manifesting as retropharyngeal soft-tissue swelling. METHODS We(More)
OBJECTIVE To investigate the McGurk effect in profoundly deafened Japanese children with cochlear implants (CI) and in normal-hearing children. This was done to identify how children with profound deafness using CI established audiovisual integration during the speech acquisition period. METHODS Twenty-four prelingually deafened children with CI and 12(More)
CONCLUSION The extent of middle ear aeration before second-stage canal wall-down (CWD) tympanoplasty was correlated with postoperative middle ear stability. OBJECTIVE To evaluate middle ear aeration before second-stage CWD tympanoplasty as a predictor of postoperative re-aeration potential and external auditory canal (EAC) stability in staged CWD(More)
We report two cases of elderly diabetic men with skull base osteomyelitis (SBO) originating from malignant external otitis (MEO). In both, a devastating infection and neural paralysis deteriorated after conventional therapy, including long-term intravenous administration of culture-directed antibiotics with strict control of blood sugar levels and surgical(More)
OBJECTIVE The objective of this study was to evaluate safety and efficacy of regenerative treatment using gelatin sponge with basic fibroblast growth factor (bFGF) in patients with tympanic membrane perforation (TMP). METHODS The current study was a prospective, multicenter, open-label, single-arm, and exploratory clinical trial to evaluate the safety and(More)