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This population-based study investigated the risk of having had prior herpes zoster within five years preceding a diagnosis of head and neck cancer. We conducted a case-control study that included 9,191 patients with a diagnosis of head and neck cancer in Taiwan's Longitudinal Health Insurance Database 2010 and 36,764 matched controls. We assessed the odds of patients with head and neck cancer having had a diagnosis of herpes zoster during the five years preceding head and neck cancer using multiple logistic regression analysis. The prevalence of prior herpes zoster among the total sample was 4.6%, 7.9% and 3.8% among patients with and without head and neck cancer, respectively (p < 0.001). The odds ratio of herpes zoster among the head and neck cancer- versus control group was 2.198 (95% CI = 2.001 ~ 2.415) after adjusting for sociodemographic characteristics and hypertension, diabetes, hyperlipidemia, tobacco use disorder, HPV infection, and alcohol dependence syndrome. Statistically significant excess odds were observed for all specific subtypes of head and neck cancer except for sinonasal cancer. Herpes zoster infection within the 5 years preceding a diagnosis of head and neck cancer may be a harbinger of developing head and neck cancer.

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HPV-positive and HPV-negative head and neck squamous cell carcinoma (HNSCC) are recognized as distinct entities. There remains uncertainty surrounding the causal effects of smoking and alcohol on the development of these two cancer types. Here we perform multivariable Mendelian randomization (MR) to evaluate the causal effects of smoking and alcohol on the risk of HPV-positive and HPV-negative HNSCC in 3431 cases and 3469 controls. Lifetime smoking exposure, as measured by the Comprehensive Smoking Index (CSI), is associated with increased risk of both HPV-negative HNSCC (OR = 3.03, 95%CI:1.75-5.24, P = 7.00E-05) and HPV-positive HNSCC (OR = 2.73, 95%CI:1.39-5.36, P = 0.003). Drinks Per Week is also linked with increased risk of both HPV-negative HNSCC (OR = 7.72, 95%CI:3.63-16.4, P = 1.00E-07) and HPV-positive HNSCC (OR = 2.66, 95%CI:1.06-6.68, P = 0.038). Smoking and alcohol independently increase the risk of both HPV-positive and HPV-negative HNSCC. These findings have important implications for understanding the modifying risk factors between HNSCC subtypes.

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This observational study aimed retrospectively assess the impact of the COVID-19 pandemic on the head and neck squamous cell carcinoma (HNSCC) diagnosis and severity of the disease in southern Brazil. All new cases diagnosed with HNSCC from March 11, 2019 to March 10, 2020 (pre-COVID-19) and from March 11, 2020 to March 10, 2021 (COVID-19) were included. The data collected were: date of the histopathological diagnosis, sociodemographic data, place of residence, data related to the tumor (location of the primary tumor, lymph node involvement, distant metastasis and TNM clinical staging), time elapsed between the diagnosis and treatment initiation. There was no significant difference in the number of new diagnoses in the COVID-19 group (n=45) compared to the pre-COVID-19 group (n=47). There was also no statistical difference regarding patients' sociodemographic profile, time between diagnosis and treatment, and overall TNM staging. However, the clinical N classification was more severe in the COVID-19 group (p=0.021). Patients diagnosed during the COVID-19 pandemic were 4.05 times more likely to have the N-stage more advanced (95% CI:1.62 - 10.12). Although there was no reduction in the number of new diagnosis of HNSCC during COVID-19 pandemic, the diagnosed cases showed lymph node metastasis in more advanced stages.

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BACKGROUND: The impact of societal factors on the occurrence of head and neck cancers (HNCs) remains understudied, especially in the Nordic countries. METHODS: To quantify the association between socio-economic status (SES) and the occurrence of HNCs, this cohort study uses data from the Nordic Occupational Cancer project that combine occupational and cancer registry data from 1961 to 2005 of 14.9 million individuals aged between 30 and 64 years. Occupational categories were combined into seven socio-economic categories. Standardized incidence ratio (SIR) analyses were conducted with the cancer incidence rates for the entire national study populations used as reference rates. RESULTS: Altogether, 83 997 HNCs-72% in men and 28% in women-were recorded. Among men, a gradient of risk associated with SES was observed for cancers of the tongue, other oral cavity subsites, pharynx, oropharynx and larynx in groups with lower SES. Managers showed decreased SIRs of 0.50 to -0.90 also for cancers of the lip, tongue, other oral cavity subsites, oropharynx, nasopharynx, nose and larynx. In contrast, excess risks of tongue, other oral cavity subsites, pharyngeal, oropharyngeal and laryngeal cancers were observed among clerical (SIRs 1.05-1.16), skilled workers (1.04-1.14), unskilled workers (1.16-1.26) and economically inactive men (1.38-1.87). Among women, no risk gradient similar to that in men was revealed. CONCLUSIONS: The current study underscores the influence of SES on the incidence of HNCs and highlights the need for targeted interventions, including tobacco and alcohol control policies, and improved access to healthcare services, particularly for socio-economically disadvantaged populations.

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BACKGROUND/AIM: Compared to other cervical localizations, masses of the nuchal region are rare in the clinical practice of otolaryngologists. This study presents the relevant etiologies of nuchal tumors. PATIENTS AND METHODS: This study included 61 cases (5.3%) from 1,150 consecutive cervical biopsies/neck tumor excisions between 2010 and 2022. Lipomatosis or Madelung fat neck diagnoses were excluded. RESULTS: Seventy-seven percent of the biopsies included lymph node tissue. Among the patients, 26 were female and 35 were male. The average diameter of the tumors was 3.5 cm (1.5-9 cm). Of the 33 non-malignant formations (54%, 42.3 years), lymphadenopathy (e.g., toxoplasmosis and tuberculosis) was found in 58% of cases. Lipomas were most common among benign tumors (8 out of 14). Malignant tumors (46%, 63.4 years) included lymphomas (10 cases, 6 recurrences) and metastases (18 cases). The metastases were predominantly squamous cell carcinomas of the pharynx (9 cases, 5 recurrences) and the skin (7 cases, 4 recurrences), as well as two cases of adenocarcinomas from the lung and pancreas. CONCLUSION: Indications of the malignant genesis of a nuchal mass include older patient age and a history of carcinomas in the head and neck region. In carcinomas of the posterior and parietal scalp and neck skin, the nuchal region should be included in the staging and follow-up examinations.

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BACKGROUND: The principal objective of this study is to ascertain the connections between well-known risk factors of oral cancer, including smoking (cigarette and tobacco), alcohol consumption, betel quid chewing, irritations in the oral cavity, history of head and neck cancer, and history of working outdoor more than 4 days/week, and the presence of OPMDs within the Thai population. METHOD: 349,318 subjects were recruited for initial screening, then 1,483 subjects who had at least 1 risk factor and a suspicious lesion underwent comprehensive oral examinations followed by a clinical diagnosis and then received initial treatment from either oral surgeons or oral medicine specialists. Among these subjects, individuals with at least 1 risk factor and with a clinical diagnosis of OPMDs were classified as cases, while those with at least 1 risk factor but without OPMDs were categorized as controls. The case group comprised a total of 487 subjects, whereas the control group consisted of 996 subjects. Exclusion criteria were known cases of currently having oral cancer or OPMDs. RESULTS: The outcomes of the multivariate analysis revealed that among the variables assessed, betel quid (adjusted OR 5.12 [3.93-6.68], p < 0.001) and smoking (adjusted OR 1.46 [1.08-1.97], p = 0.013), there were an association with the presence of OPMDs. Conversely, alcohol drinking, having irritations in the oral cavity, a history of head and neck cancer, and a history of working outdoors more than 4 days/week were not associated with the presence of OPMDs. Furthermore, we also study the synergistic effect of alcohol drinking, irritations in the oral cavity, history of head and neck cancer, and history of working outdoors more than 4 days/week using subgroup analysis. The analysis showed that alcohol consumption combined with smoking or betel quid chewing expressed a significantly increased risk of OPMDs, from 1.46 to 2.03 (OR 2.03 [1.16-3.56], p = 0.014) and from 5.12 to 7.20 (OR 7.20 [3.96-13.09], p < 0.001). CONCLUSION: Smoking and exposure to betel quid were a significant risk factors for the presence of OPMDs. The combination of alcohol with smoking or betel quid chewing was also found to increase the risk of OPMDs in this Thai northeastern population.

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Arsenic is a known carcinogen for the lungs, the bladder, and the skin, while systematic evidence on other cancer types is lacking, especially for occupational exposure. Thus, we aimed to systematically summarize current evidence on the association between occupational arsenic exposure and digestive cancers, including head and neck cancer (HNC). We conducted a systematic review on Pubmed, Web of Science, and Embase search engines. We computed pooled relative risks (RRs) and corresponding 95% confidence intervals (CIs) using DerSimonian and Laird random-effects model. Occurrence of publication bias was assessed using contour-enhanced funnel plots and Egger's test. Twenty-two studies on digestive cancers and 11 on HNC were included in the meta-analysis. RRs for the association with occupational exposure to arsenic of 1.23 (95% CI: 1.07-1.40; I2 = 72.3%, p < 0.001) and 1.08 (95% CI: 0.76-1.53; I2 = 76.6%, p < 0.001) for digestive cancer and HNC, respectively, were observed. As for specific cancer types, arsenic was associated with rectal cancer (RR: 1.51; 95% CI: 1.003-2.28; I2 = 37.0%, p = 0.174), but not with other investigated cancer types. No clear evidence of publication bias was found. The results of our study suggest that the observed association between occupational arsenic exposure and digestive cancer might be mainly driven by a positive association for rectal cancer, while arsenic exposure did not appear to be associated with HNC. However, further high-quality studies with detailed assessment of arsenic exposure are warranted to clarify the potential association of arsenic with digestive cancers and HNC.

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OBJECTIVES: The aim of this study was to explore the relationship between the EAT-Lancet diet (ELD) and head and neck cancers (HNCs) in 101,755 Americans enrolled in the Prostate, Lung, Colorectal and Ovarian (PLCO) Cancer Screening Trial. STUDY DESIGN: Prospective cohort study. METHODS: ELD score was calculated to assess participant's adherence to ELD. Cox hazard regression models were utilised to evaluate the association of ELD and dietary components with HNC risk. Restricted cubic spline (RCS) plots were employed to explore the linearity of the relationships. Predefined subgroup analyses and sensitivity analyses were performed to identify potential effect modifiers and to assess the stability of the findings, respectively. RESULTS: After a mean follow-up of 8.84 years, 279 cases of HNCs, including 169 cases of oral cavity and pharyngeal cancers and 110 cases of laryngeal cancer were recorded. This study observed a dose-response negative correlation between ELD and HNCs (hazard ratio [HR]Q4 vs Q1: 0.52; 95% confidence interval [CI]: 0.34, 0.80; P-trend = 0.003; HRper SD increment: 0.80; 95% CI: 0.71, 0.91), and oral cavity and pharyngeal cancers (HRQ4 vs Q1: 0.52; 95% CI: 0.31, 0.88; P-trend = 0.008; HRper SD increment: 0.78; 95% CI: 0.66, 0.92). Analysis using RCS plots indicated a significant linear association between adherence to the ELD and reduced risk of HNCs and oral cavity and pharyngeal cancers (P-nonlinearity > 0.05). Subgroup analysis did not reveal significant interaction factors (P-interaction > 0.05), and sensitivity analysis confirmed the robustness of this study. Additionally, negative correlations were found between the consumption of fruits and whole grains and HNCs (fruits: HRQ4 vs Q1: 0.58; 95% CI: 0.40, 0.84; P-trend = 0.010; whole grains: HRQ4 vs Q1: 0.51; 95% CI: 0.26, 0.97; P-trend = 0.004). CONCLUSION: Adherence to ELD contributes to the prevention of HNCs.

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BACKGROUND: Synovial sarcoma (SS) is a rare soft-tissue cancer. Existing literature encompasses Surveillance, Epidemiology, and End Results (SEER) data-based research on SS explaining the incidence-prevalence in general, by subtypes, and by age at diagnosis. Therefore, this study aimed to fill in the gap of knowledge about measures of disease occurrence and burden of SS by tumor site using the SEER database. METHODS: In this cross-sectional study, primary SS patients were selected from SEER 17 Registries, Nov. 2021 (2000-2020) using ICD-O-3 codes 9040, 9041, 9042, and 9043. Patients with additional cancers were excluded. The primary tumor site was categorized into (1) head/neck, (2) internal thorax, (3) abdomen/pelvis, (4) upper extremity, and (5) lower extremity using ICD-10CM codes. Five outcomes were analyzed: age-adjusted incidence rate, 5-year limited-duration prevalence rate, incidence-based mortality, case-fatality rate, and overall survival. RESULTS: From 2000-2020, the overall age-adjusted incidence rate was 0.15 per 100,000; the 5-year limited duration prevalence rate was 0.56 per 100,000; and the incidence-based mortality rate was 0.06 per 100,000 people. The case-fatality and 5-year OS rates were 39.2 % and 62.9 %, respectively. Lower extremity had the highest incidence of 0.07 (estimated 1166 cases), prevalence of 0.36 (estimated 224 cases), and mortality rate of 0.025 (estimated 429 deaths) per 100,000. The other four locations had much closer rates with each other. Intrathoracic SS had the highest case-fatality rate of 71.5 % (148/207) and lowest 5-year OS of 26.0 % (95 % CI: 19.6 %, 32.9 %) than other sites. CONCLUSION: Based on the measures of disease frequency, the most common primary tumor site is the lower extremity, followed by the upper extremity, abdomen/pelvis, internal thorax, and head/neck. The least favorable primary location is the internal thorax. Those with a primary location of the upper extremity have the longest overall survival, followed by the head/neck, lower extremity, abdomen/pelvis, and internal thorax.

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Although the relationship between allergies and cancer has been investigated extensively, the role of allergies in head and neck cancer (HNC) appears less consistent. It is unclear whether allergies can independently influence the risk of HNC in the presence of substantial environmental risk factors, including consumption of alcohol, betel quid, and cigarettes. This study aims to find this association. We examined the relationship between allergies and HNC risk in a hospital-based case-control study with 300 cases and 375 matched controls. Logistic regression models were used to estimate odds ratios (OR) and 95% confidence intervals, controlling for age, sex, tobacco smoking and opium usage history, alcohol consumption, and socioeconomic status. Our study showed a significant reduction in the risk of HNC associated with allergy symptoms after adjusting for confounders. The risk of HNC was greatly reduced among those with any type of allergy (OR 0.42, 95% CI 0.28, 0.65). The ORs were considerably reduced by 58-88% for different kinds of allergies. The risk of HNC reduction was higher in allergic women than in allergic men (71% vs. 49%). Allergies play an influential role in the risk of HNC development. Future studies investigating immune biomarkers, including cytokine profiles and genetic polymorphisms, are necessary to further delineate the relationship between allergies and HNC. Understanding the relationship between allergies and HNC may help to devise effective strategies to reduce and treat HNC.

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There is limited understanding of epidemiology and time trends of human papilloma virus (HPV)-driven head and neck cancers (HNC) in Japan, especially outside of the oropharynx. To assess HPV-driven HNC, a non-interventional study (BROADEN) of HNC patients diagnosed in 2008-2009 and 2018-2019 was conducted in Japan. Adult patients with oropharyngeal, nasopharyngeal, laryngeal, hypopharyngeal or oral cavity cancers were included in this study. HPV was centrally tested using p16INK4a immunohistochemistry, HPV-DNA PCR and HPV E6*I mRNA. HPV attributability required positivity in at least two tests (p16INK4a immunohistochemistry, HPV-DNA PCR, HPV E6*I mRNA) in the oropharynx, and HPV-DNA and HPV E6*I mRNA positivity for non-oropharynx sites. Nineteen hospitals included a total of 1108 patients, of whom 981 had valid samples. Men accounted for 82% of HNC diagnoses. Patients in the earlier cohort were younger and included a higher percentage of smokers. There was an increasing trend of HPV-driven oropharyngeal cancer over the last decade, from 44.2% to 51.7%. HPV attribution in nasopharyngeal cancers was 3.2% in 2008-2009 and 7.5% in 2018-2019; and 4.4% and 0% for larynx respectively. In total, 95.2% of HPV-driven HNC were attributed to HPV genotypes included in the 9-valent HPV vaccine being HPV16 the most prominent genotype. These results suggest that an epidemiologic shift is happening in Japan, with a decrease in smoking and alcohol use and an increase in HPV-driven HNC. The increasing trend of HPV-driven HNC in Japan highlights the need for preventive strategies to mitigate the rise of HPV-driven HNC.

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BACKGROUND: Head and neck cancer (HNC) incidence is on the rise, often diagnosed at late stage and associated with poor prognoses. Risk prediction tools have a potential role in prevention and early detection. METHODS: The IARC-ARCAGE European case-control study was used as the model development dataset. A clinical HNC risk prediction model using behavioral and demographic predictors was developed via multivariable logistic regression analyses. The model was then externally validated in the UK Biobank cohort. Model performance was tested using discrimination and calibration metrics. RESULTS: 1926 HNC cases and 2043 controls were used for the development of the model. The development dataset model including sociodemographic, smoking, and alcohol variables had moderate discrimination, with an area under curve (AUC) value of 0.75 (95% CI, 0.74-0.77); the calibration slope (0.75) and tests were suggestive of good calibration. 384 616 UK Biobank participants (with 1177 HNC cases) were available for external validation of the model. Upon external validation, the model had an AUC of 0.62 (95% CI, 0.61-0.64). CONCLUSION: We developed and externally validated a HNC risk prediction model using the ARCAGE and UK Biobank studies, respectively. This model had moderate performance in the development population and acceptable performance in the validation dataset. Demographics and risk behaviors are strong predictors of HNC, and this model may be a helpful tool in primary dental care settings to promote prevention and determine recall intervals for dental examination. Future addition of HPV serology or genetic factors could further enhance individual risk prediction.

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HPV16 is responsible for approximately 60% and 90% of global HPV-induced cervical and oropharyngeal cancers, respectively. HPV16 intratype variants have been identified by HPV genome sequencing and classified into four phylogenetic lineages (A-D). Our understanding of HPV16 variants mostly derives from epidemiological studies on cervical cancer (CC) in which HPV16 B, C, and D lineages (previously named "non-European" variants) were mainly associated with high-grade cervical lesions and cancer. Although a predominance of HPV16 lineage A (previously named "European variants") has been observed in head and neck squamous cell carcinoma (HNSCC), epidemiological and in vitro biological studies are still limited for this tumor site. Next Generation Sequencing (NGS) of the entire HPV genome has deepened our knowledge of the prevalence and distribution of HPV variants in CC and HNSCC. Research on cervical cancer has shown that certain HPV16 sublineages, such as D2, D3, A3, and A4, are associated with an increased risk of cervical cancer, and sublineages A4, D2, and D3 are linked to a higher risk of developing adenocarcinomas. Additionally, lineage C and sublineages D2 or D3 of HPV16 show an elevated risk of developing premalignant cervical lesions. However, it is still crucial to conduct large-scale studies on HPV16 variants in different HPV-related tumor sites to deeply evaluate their association with disease development and outcomes. This review discusses the current knowledge and updates on HPV16 phylogenetic variants distribution in HPV-driven anogenital and head and neck cancers.

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BACKGROUND/AIM: Fine-needle aspiration cytology (FNA) and core needle biopsy (CNB) of the thyroid gland, salivary glands, and lymph nodes are considered simple and rapid methods for minimally invasive tissue collection. We performed a postal survey to analyse the diagnostic value and complication rate of FNA and CNB in Germany. PATIENTS AND METHODS: A questionnaire comprising 11 questions was sent to all 161 German ENT departments in September 2015. RESULTS: The response rate was 45%. In 33 of the 73 responding clinics neither FNA nor CNB were carried out. Of the 26 clinics that provided detailed reasons, the majority (n=18) cited a lack of expertise among the collaborating pathologists. Overall, FNA was used more often, regardless of the anatomical region investigated. The study was based on a total of 36,684 FNAs and 9,624 CNBs. The rate of estimated meaningful and correct findings was 63% (10%-90%) for FNA, and 83% (50%-100%) for CNB. In eight cases (<0.001%) a potential tumor cell spread was reported. CONCLUSION: This is the first nationwide survey in Germany to investigate the utility of FNA and CNB across different localizations in the head and neck region. This study revealed comparable results to the literature regarding the diagnostic value of FNA and CNB. Cell spreading was only observed in individual cases. The appraisal of needle biopsies in the head and neck area seems to be rather inhomogeneous in Germany.

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Sarcopenia is a disease in which a decline in muscle mass with age is associated with a decline in physical performance. In the field of otorhinolaryngology, head and neck surgery, sarcopenia is gaining attention as a cause of swallowing disorders and as a problem in the treatment of head and neck cancer. Head and neck cancer occurs in anatomical sites related to swallowing, so patients with head and neck cancer are prone to swallowing disorders and "nutrition-related sarcopenia." Since it is a cancer, it also becomes a "disease-related sarcopenia," making it easy for patients to develop secondary sarcopenia. Medical intervention against sarcopenia is important in order to decrease the number of adverse events related to treatments for cases with sarcopenia, with reports stating that proactive exercise and nutritional therapy prior to treatment for cases with sarcopenia contributes to a decrease in serious complications as well as improving the survival rate. It is the same for head and neck cancer patients with sarcopenia, so intervention prior to treatment of head and neck cancer is an area that is expected to see reports in the future. However, if the disease is malignant, it is highly likely that sarcopenia cannot be sufficiently improved due to the short period of time from diagnosis to the beginning of treatment. In this case, choosing a treatment that takes sarcopenia into consideration is another way to handle it. Assessing sarcopenia prior to treatment may help avoid post-treatment pneumonia related to sarcopenia, postoperative complications including fistula, radiation-induced toxicity including swallowing disorders, and chemotherapy-related toxicity, and it is believed to greatly contribute to the prognosis of the overall survival (OS), disease-free survival (DFS), and disease-specific survival (DSS).

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