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Objective To demonstrate that oro‐pharyngo‐esophageal radionuclide scintigraphy (OPERS) not only detects tracheobronchial aspiration after swallowing, but also quantifies the amount of aspiration and subsequent clearance. Methods Data collected between 2014 and 2019 were reviewed for aspiration pneumonia at 12 and 24‐months after OPERS. The predictive value for aspiration pneumonia on flexible endoscopic evaluation of swallowing (FEES), videofluoroscopic swallowing study (VFSS), and OPERS, and the overall survival of patients with or without aspiration were determined. Results Thirty‐seven patients treated with radiotherapy for nasopharyngeal carcinoma (NPC) were reviewed. The incidence of aspiration detected on FEES, VFSS, and OPERS was 78.4%, 66.7%, and 44.4%, respectively. Using VFSS as a gold standard, the sensitivity and specificity of OPERS for aspiration was 73.7% and 100%. The positive and negative predictive values for aspiration were 100% and 66.7%, respectively, with an overall accuracy of 82.8%. A history of aspiration pneumonia was one factor associated with a higher chance of subsequent aspiration pneumonia within 12 months (odds ratio: 15.5, 95% CI 1.67–145.8, p

The global pandemic of 2019 novel coronavirus disease (COVID‐19) has tremendously altered routine medical service provision and imposed unprecedented challenges to the health care system. This impacts patients with dysphagia complications caused by head and neck cancers. As this pandemic of COVID‐19 may last longer than severe acute respiratory syndrome (SARS) in 2003, a practical workflow for managing dysphagia is crucial to ensure a safe and efficient practice to patients and health care personnel. This document provides clinical practice guidelines based on available evidence to date to balance the risks of SARS‐CoV‐2 exposure with the risks associated with dysphagia. Critical considerations include reserving instrumental assessments for urgent cases only, optimizing the noninstrumental swallowing evaluation, appropriate use of personal protective equipment (PPE), and use of telehealth when appropriate. Despite significant limitations in clinical service provision during the pandemic of COVID‐19, a safe and reasonable dysphagia care pathway can still be implemented with modifications of setup and application of newer technologies.

The 2019 novel coronavirus disease (COVID‐19) pandemic has been spreading worldwide at an alarming rate. Health‐care workers have been confronted with the challenge of not only treating patients with the virus, but also managing the disruption of health‐care services caused by COVID‐19. In anticipation of outbreak, clinic sessions and operation theater lists have been actively cut back since February 2020 to reduce hospital admissions and clinic attendances. This has severely disrupted health‐care services, leading to accumulating clinic caseload and substantial delays for operations. The head and neck cancer service has been faced with the difficult task of managing the balance between infection risk to health‐care providers and the risk of disease progression from prolonged waiting times. We share our experience in Hong Kong on the mitigation of head and neck cancer service disruption through telehealth and multi‐institution collaboration.

Background Head and neck squamous cell carcinoma (HNSCC) currently lacks sensitive approaches to detect cancer‐related traits in body fluid. Methods Methylation of tumor suppressor genes (TSGs) (PAX5, EDNRB, and DCC) were measured in the oral rinses from 50 HNSCC and 58 control subjects using droplet digital PCR (ddPCR). Diagnostic accuracies in detecting HNSCC and the detection rate of recurrence in the post‐treatment monitoring were analyzed. Results ddPCR TSG methylation detection in oral rinses for diagnosis of HNSCC had an AUC of 0.892 for PAX5, 0.753 for EDNRB, and 0.729 for DCC. Significant drop of TSG methylation was observed after completion of surgery (p

OBJECTIVES/HYPOTHESIS To evaluate the voice and speech outcomes after tubed supraglottic laryngeal closure (TSLC) surgery to treat chronic aspiration after radiotherapy for head and neck cancer. STUDY DESIGN A retrospective case-control study. METHODS The data of patients who underwent radiotherapy for head and neck cancer and who later required total laryngectomy or TSLC for chronic aspiration between 2004 and 2017 were retrieved from a dysphagia clinic. Preoperative and postoperative voice and speech were assessed by the GRBAS and INFVo rating scales. Control subjects who underwent radiotherapy alone or total laryngectomy with a tracheoesophageal prosthesis for other indications were recruited for comparison. RESULTS Of 15 patients who underwent a TSLC with a mean age of 57.3 years (45-75 years), 13 were male and 2 female. All patients had a history of nasopharyngeal carcinoma. The success rate of speech production using their own larynx following an intact TSLC was 64%. There was no statistically significant difference in voice and speech ratings between preoperative and TSLC subjects on the GRBAS (P = .32) and INFVo scales (P = .57), although the quality of voice appeared to deteriorate after TSLC. However, the INFVo scale for impression, intelligibility and unsteadiness of the voice after TSLC was statistically significantly better than for laryngectomy with tracheoesophageal speech. CONCLUSIONS A tubed supraglottic laryngeal closure controls chronic aspiration while preserving the larynx for phonation, and results in a better voice and speech quality than a laryngectomy with a voice prosthesis. LEVEL OF EVIDENCE 4 Laryngoscope, 131:E1616-E1623, 2021.

Objectives/hypothesis This study investigated olfactory and gustatory dysfunction in the 2020 novel coronavirus disease (COVID-19) patients, and their correlations with viral load evaluation. Study design Prospective cross-sectional cohort study. Methods One hundred forty-three symptomatic patients being screened for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) were invited to participate. The clinical data of 83 confirmed COVID-19 subjects were collected, with 60 patients who were symptomatic but negative for COVID-19 recruited as controls. The prevalence and severity of and recovery time for olfactory and gustatory dysfunction, and cycle threshold (Ct) values from a SARS-CoV-2 polymerase chain reaction assay of nasopharyngeal and deep throat swabs were collected. Their correlations with Ct values were reported. Results Thirty-nine (47.0%) and 36 (43.4%) COVID-19 patients reported olfactory and gustatory dysfunction, respectively. The results of one-way analysis of variance did not show statistically significant relationships between the Ct values and severity of olfactory and gustatory dysfunction (P = .780 and P = .121, respectively). Among the COVID-19 patients who reported smell and taste loss, 28/39 (71.8%) and 30/36 (83.3%) experienced complete recovery, respectively. The mean recovery time was 10.3 ± 8.1 days for olfactory dysfunction and 9.5 ± 6.8 days for gustatory dysfunction. The recovery time was not correlated with the Ct values (Pearson correlation coefficient, smell: -0.008, P = .968; taste: -0.015, P = .940). Conclusions There is a high prevalence of olfactory and gustatory dysfunction in COVID-19. However, the severity of and recovery from these symptoms have no correlations with the viral load of SARS-CoV-2. Level of evidence 4 Laryngoscope, 130:2680-2685, 2020.

OBJECTIVES/HYPOTHESIS To evaluate the long-term swallowing outcomes after surgical treatment for chronic aspiration in patients treated with radiotherapy for head and neck cancer. STUDY DESIGN This was a retrospective study. METHODS The data of patients who underwent radiotherapy for head and neck cancer and who subsequently required a laryngectomy or a tubed supraglottic laryngeal closure (TSLC) for recurrent aspiration pneumonia between 2004 and 2017 were retrieved from a tertiary referral hospital dysphagia clinic. The Functional Oral Intake Scale (FOIS) and the Swallowing Performance and Status Scale (SPSS) were used to assess swallowing function. RESULTS Of the 17 patients who required surgery for chronic aspiration secondary to radiotherapy for head and neck cancer, two underwent a laryngectomy and 15 a TSLC. During a mean follow-up of 77 months, the FOIS and SPSS scores significantly improved at 12, 24, and 36 months after laryngectomy and TSLC relative to the baseline (P

The aim of this study was to evaluate the impact of lymph node status from neck dissection pathological specimens on the survival for isolated regional nodal recurrence or persistence after primary treatment of nasopharyngeal carcinoma. Through a retrospective cohort study performed in an academic tertiary referral hospital in Hong Kong. Forty-six patients who underwent a salvage neck dissection between June 2001 and January 2013 for isolated regionally recurrent or persistent nasopharyngeal carcinoma was performed. Informed consent was waived for this retrospective study by The Joint CUHK-NTEC CREC. In the study forty-six patients had a salvage neck dissection for nodal failure with a mean age of 53 and 74% (34) were male. With a mean follow-up of 45.3 months, Overall survival, disease specific survival, loco-regional recurrence free survival, and regional recurrence free survival were 56.5%, 73.9%, 87.0%, and 91.3% respectively. For both univariate and multivariate analysis, patients with a number of positive lymph nodes more than 5 and a lymph node density more than 20% were significantly associated with poorer overall survival. Extracapsular spread and pathological cervical lymph node staging did not have an association with poorer survival. In conclusion, an absolute number of positive lymph nodes more than five and a lymph node density more than 20% were potentially useful prognostic factors affecting survival following a neck dissection for regional residual or recurrent nasopharyngeal carcinoma.

The role of oral microbiota in head and neck squamous cell carcinoma (HNSCC) is poorly understood. Here we sought to evaluate the association of the bacterial microbiome with host gene methylation and patient outcomes, and to explore its potential as a biomarker for early detection or intervention. Here we performed 16S rRNA gene amplicon sequencing in sixty-eight HNSCC patients across both tissue and oral rinse samples to identify oral bacteria with differential abundance between HNSCC and controls. A subset of thirty-one pairs of HNSCC tumor tissues and the adjacent normal tissues were characterized for host gene methylation profile using bisulfite capture sequencing. We observed significant enrichments of Fusobacterium and Peptostreptococcus in HNSCC tumor tissues when compared to the adjacent normal tissues, and in HNSCC oral rinses when compared to healthy subjects, while ten other bacterial genera were largely depleted. These HNSCC-related bacteria were discriminative for HNSCC and controls with area under the receiver operating curves (AUCs) of 0.84 and 0.86 in tissue and oral rinse samples, respectively. Moreover, Fusobacterium nucleatum abundance in HNSCC cases was strongly associated with non-smokers, lower tumor stage, lower rate of recurrence, and improved disease-specific survival. An integrative analysis identified that enrichment of F. nucleatum was associated with host gene promoter methylation, including hypermethylation of tumor suppressor genes LXN and SMARCA2, for which gene expressions were downregulated in the HNSCC cohort from The Cancer Genome Atlas. In conclusion, we identified a taxonomically defined microbial consortium associated with HNSCC that may have clinical potential regarding biomarkers for early detection or intervention. Host&ndash, microbe interactions between F. nucleatum enrichment and clinical outcomes or host gene methylation imply a potential role of F. nucleatum as a pro-inflammatory driver in initiating HNSCC without traditional risk factors, which warrants further investigation for the underlying mechanisms.