description | Perineural invasion is the process of neoplastic invasion of nerves. **Perineural invasion (Variable number: 4.16)** in \'NATIONAL CANCER DATA DICTIONARY, V 1.1, Part A, BASIC VARIABLES for Adults, Adolescents, and Children\' see [Nationale Krebsregistrierungsstelle](https://www.nkrs.ch) > Partner im Gesundheitswesen > [Information, Grundlagen und Datenstruktur zum KRG](https://www.nicer.org/assets/files/krebsregistrierung/datadictionary_e-g-f-i.zip). | Perineural invasion is the process of neoplastic invasion of nerves.
**Perineural invasion (Variable number: 4.16)**
in \'NATIONAL CANCER DATA DICTIONARY, V 1.1, Part A, BASIC VARIABLES for Adults, Adolescents, and Children (23.12.2019)\'
([EN](https://www.nacr.ch/assets/files/uploads/a-datadictionary-basicvariables-v1.1.pdf),
[DE](https://www.nkrs.ch/assets/files/uploads/a-datenstruktur-variablen-der-basisdaten-v1.1.pdf),
[FR](https://www.onec.ch/assets/files/uploads/a-dict-des-donnees-variables-de-base-v1.1.pdf),
[IT](https://www.snrt.ch/assets/files/uploads/a-dati-oncologici-variabili-di-base-v1.1.pdf)) | |