ENT Liu Knowledge Base Head & neck tumours · physician reviewed
Skin Cancer of the Head and Neck · Symptoms & diagnosis

How is skin cancer of the head and neck diagnosed and staged?

Reviewed: 8 November 2026 By: Xiangpeng Liu, MD Topic: Skin Cancer of the Head and Neck Answer length: short, citable
Quick answer

Diagnosis requires a tissue biopsy read by a head and neck pathologist, supported by endoscopic examination and contrast CT or MRI of the neck; PET-CT is added when nodal or distant spread is suspected. Staging uses the AJCC TNM system and guides whether surgery, radiotherapy, chemoradiotherapy or systemic therapy is the primary treatment.

In detail

Melanoma uses AJCC staging based primarily on Breslow thickness, ulceration, nodal involvement and distant metastasis. Cutaneous SCC of the head and neck uses a separate high-risk framework that considers size, depth, perineural invasion, ear/lip location, immunosuppression and nodal disease; a "small" ear lesion can therefore be high stage.

Before radiotherapy, guidelines recommend a dental assessment and extraction of teeth with a poor prognosis inside the radiation field. Ask for this early: it prevents osteoradionecrosis later.

  • Full skin and head/neck examination with dermoscopy by an experienced clinician
  • Excisional biopsy for suspected melanoma with Breslow depth reported; incisional or punch biopsy for large facial lesions
  • Pathology assessment of histological subtype, Breslow thickness, ulceration, margins and perineural invasion
  • Ultrasound ± FNA of regional nodes (including parotid nodes) for high-risk cSCC, melanoma or Merkel cell carcinoma
  • MRI with contrast when perineural invasion or deep extension is suspected; CT/PET-CT for advanced disease
  • Sentinel lymph node biopsy for melanoma of appropriate thickness and selected high-risk tumours

What this means in practice: this answer is part of the “Symptoms & diagnosis” section of the Skin Cancer of the Head and Neck topic. If you are comparing treatment options, also read how to compare a second opinion and which records to send.

Other common questions about skin cancer of the head and neck

See all 14 questions in this topic →

Sources for this answer

  1. NCCN Guidelines for Patients: Head and Neck Cancers National Comprehensive Cancer Network · 2025
  2. Head and Neck Cancers (patient information) US National Cancer Institute · 2025
  3. Global Cancer Facts & Figures, 5th Edition (GLOBOCAN 2022 tables) American Cancer Society · 2024
  4. Ultraviolet radiation and skin cancer (fact sheet) World Health Organization · 2024
  5. Global Cancer Observatory (GLOBOCAN 2022) International Agency for Research on Cancer / WHO · 2022 · Source of worldwide and country-level incidence and mortality estimates.
  6. NCCN Guidelines for Patients: Head and Neck Cancers National Comprehensive Cancer Network · 2025

Written and medically reviewed by Xiangpeng Liu, MD

Associate Chief Physician, ENT & Head/Neck Surgery · Chenzhou First People’s Hospital, Chenzhou, Hunan, China

Editorial policy & reviewer credentials · All sources

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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.