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Objective: For low-grade intraepithelial neoplasia cases, pharyngolaryngeal lesions equal to or less than 5 mm in size do not generally progress to invasive carcinoma. However, micro-superficial lesions equal to or less than 5 mm that showed rapid growth have been recently encountered. This study aimed to identify the characteristics of preferential progression of lesions equal to or less than 5 mm in size. Method: Gross findings, endoscopic findings and pathological results of 55 lesions measuring equal to or less than 5 mm in diameter were retrospectively reviewed to identify factors that distinguish squamous cell carcinoma or high-grade intraepithelial neoplasia from low-grade intraepithelial neoplasia or non-atypia lesions. Results: The overall sensitivity, specificity, accuracy, and positive and negative predictive value of background colouration and intrapapillary capillary loop pattern in differentiation of squamous cell carcinoma or high-grade intraepithelial neoplasia from low-grade intraepithelial neoplasia or non-atypia lesions were all 100 per cent. Conclusion: Diagnosis based on background colouration and the intrapapillary capillary loop pattern on narrow-band imaging facilitates the pathological examination of lesions measuring equal to or less than 5 mm. [ABSTRACT FROM AUTHOR]

Objectives: Unlike glottic cancer, supraglottic cancer often presents with neck metastases. This different might be attributable to the location of the primary lesion. This study aimed to clarify the relationships between the sublocation of T1-2 supraglottic cancer, human papillomavirus (HPV) infection, neck metastasis, and prognosis of supraglottic cancer.Methods: This retrospective clinical study investigated 55 Japanese patients with T1-2 supraglottic cancer treated between 1994 and 2015.Results: Of 55 patients with T1-2 supraglottic cancer, neck metastasis was present at initial diagnosis in 14 patients (25.5%). Presence of neck metastasis was the only factor associated with worse prognosis of T1-2 supraglottic cancer (p=0.004). In multivariate analysis, age <70years (p=0.033) and sublocation of the primary lesion in the superior epilaryngeal portion (p=0.017) were significantly associated with presence of neck metastasis in multivariate analysis. Twelve (27.9%) of 43 patients showed positive results for human papillomavirus infection. However, human papillomavirus infection was not associated with prognosis, presence of neck metastasis, or primary lesion sublocation in T1-2 supraglottic cancer.Conclusion: Relatively young patients with supraglottic cancer at the superior epilaryngeal portion are more likely to show neck metastasis. Human papillomavirus infection was not associated with frequency of neck metastasis. [ABSTRACT FROM AUTHOR]

Objective: The treatment of recurrent respiratory papillomatosis (RRP) continues to be difficult. Adjuvant pharmacological treatment is increasingly being used, and intralesional cidofovir injection remains the leading option. Almost all papers regarding the treatment come from the United States and Europe. The present study demonstrated it for the first time from Asia.Methods: Ten patients with RRP were treated with intralesional cidofovir injection. The severity of papillomatosis and adverse events including blood leukocytes, blood neutrophils, and serum creatinine were evaluated before and after the completion of treatment.Results: Human papillomavirus (HPV) type 6 was detected in nine patients, and no types of HPV were detected in a remaining patient. Severity scores significantly improved after treatment (p=0.005). However, complete resolution was achieved in only one patient. No significant differences were observed between before and after treatment with respect to adverse events (p=0.866 for blood leukocytes, p=0.866 for blood neutrophils, and p=0.933 for serum creatinine). Squamous cell carcinoma occurred three and half years after the completion of treatment in a patient without HPV detection. However, the link between cidofovir and the occurrence of carcinoma in the case remains questionable.Conclusion: This initial report of intralesional cidofovir injection for RRP from Asia demonstrated acceptable efficacy without obvious adverse events. However, the uncontrolled spread of this treatment should be avoided, and eighteen statements approved by the task force of the United States should be referred to while planning this treatment. [ABSTRACT FROM AUTHOR]

Conclusions: Distant metastasis was a major pattern of recurrence after postoperative radiotherapy (PORT) for squamous cell carcinoma (SCC) of the oropharynx, hypopharynx, and larynx. PORT provided good loco-regional control, with tolerable toxicities. Advanced pT and pN were unfavorable prognostic factors. Objective: To determine the clinical outcomes, and the patterns and risk factors for recurrence of SCCs of the oropharynx, hypopharynx, and larynx treated with surgery and PORT. Methods: We retrospectively reviewed 84 patients who received PORT after definitive surgery for SCC of the oropharynx, hypopharynx, or larynx between 2000 and 2010. The primary sites were the oropharynx in 25 patients, hypopharynx in 47 patients, and larynx in 12 patients. Results: The 3-year overall survival (OS), progression-free survival (PFS), and loco-regional control (LRC) rates were 64.9%, 56.7%, and 92.1%, respectively. Recurrences were observed in 27 patients: 6 patients had loco-regional recurrence and 23 patients developed distant metastasis. On multivariate analysis, pT4 and pN2c-N3 displayed significantly worse effects on OS ( p = 0.02 and p < 0.01, respectively) and PFS ( p = 0.02 and p < 0.001, respectively). In the acute phase, 12 patients experienced grade 3 or 4 toxicities. There were no grade 5 toxicities. Late grade 3 toxicity developed in six patients and no grade 4 or 5 toxicities were observed. [ABSTRACT FROM AUTHOR]