BACKGROUND: Although both a lower and a higher body mass index (BMI) are reportedly associated with head and neck cancer (HNC), reports from Asia are scarce. Moreover, evidence regarding the association between height and HNC is limited.
METHODS: We investigated associations between BMI, height, and the incidence of HNC among 102,668 participants (49,029 men and 53,639 women) aged 40-69 years in the Japan Public Health Center-based Prospective Study. We followed participants from 1990 to 2013. We conducted a Cox proportional hazards regression analysis, which included adjustment for potential confounders such as smoking status. Baseline weight and height information were self-reported.
RESULTS: Over an average follow-up of 18.7 years, 311 HNC cases were newly diagnosed. Lower BMI was significantly associated with HNC, with hazard ratios [HR] of 2.75 (95% confidence interval [CI]: 1.63-4.64) for <18.5 kg/m2 and 1.63 (95% CI=1.15-2.30) for 18.5-20.9 kg/m2 compared to 23-24.9 kg/m2. Increased risk was suggested for higher BMI, with an HR of 1.30 (95%CI=0.84-2.00) for ≥27.5 kg/m2. This trend was also observed in quadratic models. Results were similar among never smokers. Meanwhile, only lower BMI showed a strong association with HNC risk among former and current smokers (HR: 3.09, 95%CI: 1.54-6.20 for <18.5 kg/m2 compared to 23 to 24.9 kg/m2). Height showed no association with HNC.
CONCLUSIONS: Lower BMI was significantly associated with HNC risk, while increased HNC risk was suggested in higher BMI among never smokers. Among former and current smokers, only lower BMI was associated with HNC risk.

UNASSIGNED: Head and neck cancer (HNC) is a complex disease, and multiple risk factors can lead to its progression. Observational studies indicated that herpes simplex virus (HSV) may be correlated with the risk of HNC. However, the causal effects and direction between them were still unclear.
UNASSIGNED: This study utilized a Mendelian randomization (MR) approach for causality assessment between HSV infection and Head and neck cancer based on the latest public health data and Genome-Wide Association Study (GWAS) data. The causal effects were estimated using IVW, weighted median, and MR-Egger. A reverse MR analysis was subsequently performed. Cochrans Q test, MR-Egger intercept test, leave one out analysis, and the funnel plot were all used in sensitivity analyses.
UNASSIGNED: Genetically predicted higher level of HSV-1 IgG was causally related to HNC (OR=1.0019, 95%CI=1.0003-1.0036, p=0.0186, IVW) and oral and oropharyngeal cancer (OR=1.0018, 95%CI=1.0004-1.0033, p=0.0105, IVW). The reverse MR analysis did not demonstrate a reverse causal relationship between HSV and HNC. However, HSV-2 infection was not causally related to HNC data and oropharyngeal cancer data. Sensitivity analysis was performed and revealed no heterogeneity and horizontal pleiotropy.
UNASSIGNED: Collectively, a significant association was noted between HSV infection and increased risk of HNC, providing valuable insights into the etiology of this malignancy. Further in-depth study is needed to validate these findings and elucidate the underpinning mechanisms.

BACKGROUND: An estimated 20% of patients with oral and oropharyngeal squamous cell carcinoma (OOSCC) have micrometastases (Mi) or isolated tumor cells (ITC) in the cervical lymph nodes that evade detection by standard histological evaluation of lymph node sections. Lymph node Mi and ITC could be one reason for regional recurrence after neck dissection. The aim of this study was to review the existing data regarding the impact of Mi on the survival of patients with OOSCC.
METHODS: PubMed and the Cochrane Library were searched for articles reporting the impact of Mi and ITC on patient survival. Two authors independently assessed the methodological quality of retrieved studies using the Downs and Black index. Data were also extracted on study type, number of included patients, mode of histological analysis, statistical analysis, and prognostic impact.
RESULTS: Sixteen articles with a total of 2064 patients were included in the review. Among the 16 included studies, eight revealed a statistically significant impact of Mi on at least one endpoint in the Kaplan-Meier and/or multivariate analysis. Three studies regarded Mi as Ma, while five studies found no impact of Mi on survival. Only one study demonstrated an impact of ITC on patient\'s prognosis in the univariate but not in the multivariate analysis.
CONCLUSIONS: The majority of cases included in the review were patients with oral cancer. The findings provide low-certainty evidence that Mi negatively impacts survival. Data on ITC were scarcer, so no conclusions can be drawn about their effect on survival. The lower threshold to discriminate between Mi and ITC should be defined for OOSCC since the existing thresholds are based on data from different tumors. The histological, immunohistological, and anatomical characteristics of Mi and ITC in OOSCC as well as the effect of radiotherapy on Mi should be further investigated separately for oral and oropharyngeal carcinomas.

Oropharyngeal squamous cell carcinoma is a prevalent neoplastic condition. The incidence rate in Malaysia is rising, with human papillomavirus (HPV) infection being recognized as a significant contributing factor. Hence, it is paramount for physicians to effectively diagnose and identify significant indicators that may indicate a malignant etiology. In this study, we present a case of a middle-aged Malay male who presented with the primary symptom of persistent right throat discomfort for one month. The preliminary presentation, blood parameters, and initial histopathological examination (HPE) findings indicate the presence of an infection. However, despite undergoing several medical treatments, the patient\'s symptoms remain, albeit with only minor clinical improvement. Subsequently, the patient underwent a biopsy under general anesthesia, which subsequently yielded a report indicating the presence of oropharyngeal squamous cell carcinoma with a negative p16 status. Therefore, it is imperative for clinicians to possess knowledge of warning flags and exercise vigilance when encountering a patient who fails to respond despite thorough and precise evaluation. If there is a strong suspicion of malignancy, it is imperative to do a comprehensive clinical investigation and regular monitoring.

OBJECTIVE: Fear of recurrence (FoR) is a prevalent and difficult experience among cancer patients. Most research has focused on FoR among breast cancer patients, with less attention paid to characterizing levels and correlates of FoR among oral and oropharyngeal cancer survivors. The purpose was to characterize FoR with a measure assessing both global fears and the nature of specific worries as well as evaluate the role of sociodemographic and clinical factors, survivorship care transition practices, lifestyle factors, and depressive symptoms in FoR.
METHODS: Three hundred eighty-nine oral and oropharyngeal survivors recruited from two cancer registries completed a survey assessing demographics, cancer treatment, symptoms, alcohol and tobacco use, survivorship care practices, depression, and FoR.
RESULTS: Forty percent reported elevated global FoR, with similar percentages for death (46%) and health worries (40.3%). Younger, female survivors and survivors experiencing more physical and depressive symptoms reported more global fears and specific fears about the impact of recurrence on roles, health, and identity, and fears about death. Depression accounted for a large percent of the variance. Lower income was associated with more role and identity/sexuality worries, and financial hardship was associated with more role worries.
CONCLUSIONS: FoR is a relatively common experience for oral and oropharyngeal cancer survivors. Many of its correlates are modifiable factors that could be addressed with multifocal, tailored survivorship care interventions.
CONCLUSIONS: Assessing and addressing depressive symptoms, financial concerns, expected physical symptoms in the first several years of survivorship may impact FoR among oral and oropharyngeal cancer survivors.

We present a case of squamous cell carcinoma (SCC) in the setting of Waldenström macroglobulinemia (WM). A 68-year-old male and daily marijuana smoker with recently diagnosed WM presented via telemedicine in 2020 for a progressively worsening sore throat and unintentional weight loss. Immunotherapy for WM was delayed due to the COVID-19 pandemic. In the clinic, examination revealed an indurated, tender midline mass at the base of the tongue, not limiting tongue mobility. The left level-II and right level-III lymph nodes were enlarged. The oropharyngeal lesion was biopsied, and pathology was consistent with human papillomavirus-positive (HPV+) SCC. Four cycles of concurrent chemotherapy and radiation for SCC were administered without delay, with an initial response. However, on surveillance, metastases to the brain and lungs were detected, and the patient was placed on palliative treatment as he did not meet eligibility for a clinical trial due to his WM. Concurrent WM and HPV+ SCC may have a worse prognosis, due to disease progression and reduced therapeutic options.

The proportion of oral and oropharyngeal squamous cell carcinoma (OOSCC) that can be attributed to human papillomavirus (HPV) infection is growing nowadays. A potential factor indicating the occurrence of HPV-positive OSCC is a change in the degree of methylation of gene promoters that play a key role in the immune response. In this study, we investigated the difference in the methylation of EDARADD, GBP4, HAVCR2, HLA DPB1, IL12RB1, MARCO, and SIGLEC12 gene promoters in samples of healthy oral mucosa versus samples of oral and oropharyngeal cancer. The presence of HPV infection in samples was examined earlier. To determine the difference in methylation of those gene promotors, isolated and bisulfite-modified DNA was analysed by the methylation-specific PCR method. The investigated gene promoters were found to be more hypomethylated in the oral and oropharyngeal cancer samples in comparison to normal tissue. The proportion of unmethylated gene promoters was similar in HPV-positive and HPV-negative cancers, although the data should be confirmed on a larger set of samples. To conclude, in samples of healthy oral mucosa, the investigated gene promoters were found to be methylated in a high percentage (73.3% to 100%), while in oral and oropharyngeal cancer samples, they were methylated in a low percentage (11.1% to 37%), regardless of HPV infection.

Oral and/or oral pharyngeal cancer (OPC) has an approximately 53% five-year survival rate in the United States. It is postulated that the rationale for this low survival rate is due to delayed diagnosis and treatment of OPC at its later stages. Recently the United States Preventive Services Task Force found insufficient evidence to recommend for or against oral cancer examination (OCE) by primary care providers (PCP), i.e., medical providers who are not dental providers or otolaryngologists. The purpose of the paper is to provide a logical discussion of the varied research on OCE, while presenting the evidence for annual opportunistic OCE in the primary care setting. Trained PCPs in OCE have the likelihood of detecting OPC at an early non symptomatic stage, which could result in lower treatment morbidity and mortality due to the disease. This review of the OCE research summarizes evidence that points to a logical benefit of OCE. Opportunistic annual non symptomatic OCE by PCPs who have been trained in OCE techniques may result in consistent early detection of OPC, particularly for patients at high risk for developing the disease.

Objectives Elective unilateral neck irradiation in well-lateralized tonsil carcinoma for N2b disease is controversial. Metrics regarding nodal burden beyond the N-stage to define the upper limit of this de-escalation approach remain limited. We investigated the role of nodal number, level, and volume on outcomes in patients with well-lateralized tonsil carcinoma treated with this approach. Methods A total of 37 patients received radiotherapy (RT) with unilateral neck coverage for well-lateralized tonsil cancer. Of patients, 95% had p16+ disease, and 81% were staged with positron emission tomography/computed tomography. The majority of patients received definitive chemoradiation on prospective de-escalation trials. Ten patients had ipsilateral neck dissections and were treated adjuvantly. The median RT dose to the ipsilateral neck (generally II-IV) was 45 Gy. The effects of nodal number, max dimension, volume, and level on recurrence-free survival (RFS) and overall survival (OS) were to be analyzed via Cox proportional hazards (Cox-PH). Results After a median follow-up of 3.9 years, two-year RFS and two-year OS were 100% and 97%, respectively. Given the 0% contralateral recurrence rate, Cox-PH analysis was not performed. Of patients, 70% were American Joint Committee on Cancer (AJCC) 7th edition N2b, with a median number of nodes, number of nodal levels, max dimension, and volume of two, one, 3.4 cm, and 15.6 cc, respectively. There were several patients with low-lying nodes; aggregate nodal volume measured was up to 85.4 cc. Conclusion Unilateral neck irradiation in well-lateralized tonsil carcinoma resulted in no contralateral recurrence. Nodal volume, level, and number do not seem to have a significant impact on outcomes.

To describe the indications, technique, and our experience in the application of the transverse cervical artery anterior perforator flap (ap-TCAF) for reconstruction of head and neck oncological defects.
From September 2016 to September 2019, 11 patients underwent surgical treatment for head neck squamous cell carcinoma and were subsequently reconstructed with ap-TCAFs. The clinical details were recorded, and the postoperative appearance and function were analyzed.
The ap-TCAF was used to reconstruct intraoral defects in eight patients and to repair an oropharyngeal defect in one patient. In two remaining patients, the ap-TCAF was divided into two to restore defects with both an intraoral and extraoral component. The flap size ranged from 6 × 4 cm to 15 × 9 cm. All flaps healed uneventfully. There was no delayed wound healing or dysfunction at the donor site.
The ap-TCAF is reliable with characteristics making it useful for head and neck oncological reconstruction, especially in male patients.