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Open research questions in Head and Neck Cancer Studies

316 unresolved questions extracted from the limitations and future-work sections of 2,379 Head and Neck Cancer Studies papers in our library. Each links back to the study that raised it.

What the literature leaves open

  • further studies could investigate the application of machine learning techniques in clinical oncology, - research could focus on identifying complex prognostic patterns in high-dimensional data, - studies could explore the use of multivariable models in mortality risk stratification beyond TNM staging alone in OTSCC patients

    Development and external validation of a nomogram for overall survival in oral tongue squamous cell carcinoma using machine learning-assisted feature selection · 2026 · DOI

  • The current prognosis of OTSCC relies heavily on TNM staging, which may not be sufficient to accurately predict patient outcomes. There is a need to maximize the prognostic value of routinely available clinical and histopathological data. The study aims to address this gap by developing a prognostic nomogram using machine learning-assisted feature selection.

    Development and external validation of a nomogram for overall survival in oral tongue squamous cell carcinoma using machine learning-assisted feature selection · 2026 · DOI

  • Clinical evidence on the effectiveness of 3D exoscopic surgery in OPSCC is limited. There is a need for studies comparing the pathological radicality and surgical margin adequacy of transoral resections using robotic and exoscopic approaches.

    Resection margins in transoral oropharyngeal surgery: comparative analysis of robotic and VITOM Eagle–assisted exoscopic approaches · 2026 · DOI

  • Further research is needed to investigate the association between HPV outcomes and socioeconomic factors, - Further research is needed to investigate the association between HPV outcomes and sexual behaviours

    Assessing the Incidence, Persistence and Clearance of Oral HPV Detection Among Metropolitan and Non-Metropolitan Indigenous Australian Adults · 2026 · DOI

  • Limited longitudinal evidence on oral HPV among Aboriginal and Torres Strait Islander peoples. Limited understanding of the associations between HPV outcomes and behavioural, sexual health, and socioeconomic factors.

    Assessing the Incidence, Persistence and Clearance of Oral HPV Detection Among Metropolitan and Non-Metropolitan Indigenous Australian Adults · 2026 · DOI

  • In spite of mounting evidence on their impact on survival outcomes, the incorporation of histopathological features, including perineural invasion (PNI) and the worst pattern of invasion, in staging and risk stratification is still lacking.

    Survival Trends Associated With Histopathological Risk Factors in Oral Squamous Cell Carcinoma · 2026 · DOI

  • The strong positive correlation of ALDH1-High score with advanced stage and grade highlights its potential role as a key driver of tumor aggression, warranting further investigation as a prognostic marker.

    Correlation Between Prognostic Indicators, HPV Status, and Cancer Stem Cell Markers in a Population of Human Tongue Carcinomas · 2026 · DOI

  • While tobacco and alcohol are established risk factors, the role of human papillomavirus (HPV) in oral carcinogenesis remains debated.

    Correlation Between Prognostic Indicators, HPV Status, and Cancer Stem Cell Markers in a Population of Human Tongue Carcinomas · 2026 · DOI

  • Timeliness after laryngectomy for pathologic T4 (pT4) laryngeal cancer is poorly characterized.

    Predictors of Delayed and Omitted Postoperative Radiotherapy After Laryngectomy for pT4 Laryngeal Cancer · 2026 · DOI

  • Transoral robotic surgery (TORS) with neck dissection has emerged as an organ-preserving treatment for hypopharyngeal squamous cell carcinoma (HPSCC), but long-term evidence remains limited.

    Transoral robotic surgery and neck dissection for hypopharyngeal cancer: long-term prognostic factors and survival outcomes · 2026 · DOI

  • OBJECTIVES: While there are plausible biological explanations for the association between oral health and head and neck cancers (HNC), existing studies have yielded conflicting results.

    Oral Health—Head and Neck Cancers: Addressing Confounding Through Negative Control and Quantitative Bias Analyses · 2025 · DOI

  • The premetastatic niche (PMN), a modified lymph node microenvironment preparing for future metastasis, is poorly understood.

    Nonmetastatic Lymph Node Histological Architecture Is Associated With Metastasis, Recurrence, and Survival in Oral Squamous Cell Carcinoma · 2025 · DOI

  • Background/purpose: South Asia has a high burden of oral cancer (OC); however, delays in diagnosis remain under-researched.

    Patient-related factors influencing delays in oral cancer diagnosis: Insights from Pakistan · 2025 · DOI

  • Background/purpose: Tegafur-uracil (UFUR) is widely prescribed as metronomic adjuvant chemotherapy for oral squamous cell carcinoma (OSCC) in East Asia, though its long-term benefit remains unclear.

    Adjuvant metronomic tegafur-uracil is associated with poorer outcomes and unfavorable histopathologic progression in oral squamous cell carcinomas · 2025 · DOI

  • CONCLUSIONS: Although a relatively high level of awareness concerning HPV was observed, the gaps in knowledge suggest that further efforts are necessary to educate young adults.

    An Assessment of Young Adults’ Awareness and Knowledge Related to the Human Papillomavirus (HPV), Oropharyngeal Cancer, and the HPV Vaccine · 2025 · DOI

  • Post-TORS haemorrhage represents the most severe complication associated with TORS, however currently there is no consensus for managing these patients.

    Haemorrhage following transoral robotic surgery in head and neck cancer · 2025 · DOI

  • CONCLUSIONS: The significantly increased incidence of lip, oral cavity and pharyngeal cancers in Aboriginal and Torres Strait Islander peoples in Australia is concerning and should be explored.

    Lip, oral and oropharyngeal cancer incidence among Aboriginal and Torres Strait Islander Peoples: First report from Australian population‐based cancer registry, 1999–2018 · 2024 · DOI

  • We suggest that young adults should be considered high-risk for the contraction of oral HPV, although acknowledge that this sample of HE students may not be representative of the wider population.

    Risk factors associated with oral Human Papillomavirus (HPV) prevalence within a young adult population · 2024 · DOI

  • Despite this uniqueness, studies that solidly assess the efficacy and cost-effectiveness of oral cancer screening are scanty, and the only large randomized trial undertaken so far shows limited evidence of mortality reduction through population screening.

    Estimating the Benefits of Oral Cancer Screening: Challenges and Opportunities · 2024 · DOI

  • In patients with oral cancer, the risk factors for local, regional, and distant recurrence according to margin status have not been well established.

    A Matter of Margins in Oral Cancer—How Close Is Enough? · 2024 · DOI

  • The incidence of human papillomavirus (HPV)-associated oropharyngeal squamous cell carcinoma (OPSCC) is rising in the West, but little is known in Asia.

    Changes in the Incidence and Human Papillomavirus-Positive Portion of Oropharyngeal Squamous Cell Carcinoma in Hong Kong · 2024 · DOI

  • A comprehensive report using standardized methods is warranted to characterize the risk and to inform on survivorship strategy.

    Stroke Risk in Survivors of Head and Neck Cancer · 2024 · DOI

  • Further research is needed to investigate the long-term outcomes of VMAT and IMRT in the treatment of tongue cancer. The role of concurrent chemotherapy in combination with VMAT or IMRT should be explored. The development of new treatment strategies and technologies should be investigated to improve the outcomes of tongue cancer patients.

    Intensity-Modulated Radiotherapy versus Volumetric Modulated Arc Therapy in Post-operative Carcinoma Tongue: A Systematic Review of Dosimetric Parameters, Treatment Efficiency, and Clinical Outcomes · 2026 · DOI

  • The delivery of adequate radiation doses to target volumes while minimizing toxicity to surrounding normal tissues remains a clinical challenge. There is a need for a comprehensive comparison of IMRT and VMAT in the post-operative setting for tongue cancer patients.

    Intensity-Modulated Radiotherapy versus Volumetric Modulated Arc Therapy in Post-operative Carcinoma Tongue: A Systematic Review of Dosimetric Parameters, Treatment Efficiency, and Clinical Outcomes · 2026 · DOI

  • The lack of effective hemostatic agents for controlling bleeding during endoscopic nasopharyngeal biopsy. The need for a standardized first-line pharmacologic intervention for nasopharyngeal hemorrhage management. The limited understanding of the efficacy and safety of topical tranexamic acid in patients undergoing endoscopic nasopharyngeal biopsy.

    Topical Tranexamic Acid Application to Facilitate Biopsy Acquisition in Endoscopic Nasopharyngeal Biopsy: A Prospective Case Series Analysis · 2026 · DOI

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316 open questions have been extracted from the limitations and future-work passages of 2,379 Head and Neck Cancer Studies papers in our library. Each one below links back to the study that raised it, so you can read the original claim in context.

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