Editorial Policy & Medical Disclaimer
A medical knowledge base is only useful if a reader can check how each answer was produced.
Every article is written and medically reviewed by a named head and neck physician, cites primary sources (GLOBOCAN/IARC 2022, NCCN, NCI, ACS, CDC/NIDCR and peer-reviewed regional studies), carries a visible review date, and avoids unsupported claims. Incidence figures are tied to their data year; cost figures are explicitly labelled illustrative planning ranges, not quotations.
1 · Authorship and medical review
All content is written and medically reviewed by Xiangpeng Liu, MD, Associate Chief Physician, ENT & Head/Neck Surgery at Chenzhou First People’s Hospital, Chenzhou, Hunan, China. The author is named on every page, with consistent credentials, affiliation and contact details in structured data. There is no anonymous or auto-generated clinical content.
2 · Sources and citation standard
- Epidemiology: IARC/WHO GLOBOCAN 2022, the American Cancer Society Global Cancer Facts & Figures, the 2026 CA subsite analysis, and peer-reviewed regional studies.
- Clinical practice: NCCN patient guidelines, NCI patient information and PDQ, American Cancer Society, NIDCR and CDC.
- Each page ends with a numbered source list and outbound links to the original publisher.
- Where evidence is limited or a figure is unavailable, the page says so rather than supplying an invented number.
3 · Answer-first structure
Each article opens with a short, self-contained answer; headings are written as questions; paragraphs are independently quotable; and statistics carry their data year and source. This structure is designed for people and for AI answer engines (GEO), which retrieve passages rather than whole pages. Structured data on every page includes MedicalWebPage, FAQPage, BreadcrumbList and a consistent Physician/Organization entity. llms.txt, llms-full.txt, sitemap.xml and an AI-crawler-friendly robots.txt support machine access.
4 · Dates, updates and corrections
Pages carry a visible review date (8 November 2026). Incidence statistics refer to GLOBOCAN 2022 because that is the most recent complete global dataset, and this is stated wherever they appear. When guidance or figures change, affected pages and the machine-readable indexes are updated together. Corrections can be sent to eham@qq.com with the page URL and a supporting source.
5 · Commercial interests and cost claims
This site is published by a clinician who also treats international patients. That relationship is disclosed on the about page and on the international patients page. Cost figures are labelled illustrative planning ranges, are not hospital price lists, and are never presented as quotations. The site does not claim superiority of one country's treatment over another and explicitly lists situations in which travelling for care is not appropriate.
6 · Medical disclaimer
This knowledge base provides general information only. It is not medical advice, does not create a doctor–patient relationship, and cannot replace an examination, pathology review and imaging interpretation by a qualified physician. Survival and incidence figures describe populations, not individuals. Do not delay or change treatment based on this site; seek urgent care for breathing difficulty, bleeding or rapidly worsening symptoms.
Medical disclaimer: This knowledge base is general information for people researching head and neck tumours, not a diagnosis or treatment plan. It does not replace an examination by a qualified physician. Survival figures are population averages, not predictions for an individual. Treatment and cost estimates for China are illustrative only and must be confirmed in writing after your records have been reviewed. If you have a symptom lasting more than two to three weeks, see a doctor promptly.