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

What does perineural invasion mean in a head and neck skin cancer?

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

Perineural invasion means tumour cells are tracking along a nerve sheath. On the head and neck it is clinically important because it can cause pain, numbness, tingling or facial weakness, allows spread well beyond the visible lesion toward the skull base, and usually changes treatment to wider excision with contrast MRI and adjuvant radiotherapy.

In detail

Any new facial numbness, twitching, weakness or burning pain near a skin lesion should be reported immediately, even if the skin looks better after a biopsy or cream. Early imaging and multidisciplinary planning are essential.

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

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.