Collaborative Stage

Collaborative Stage for TNM 7 - Revised 12/28/2009 [ Schema ]

CS Site-Specific Factor 11
Perineural Invasion

Note: Code the presence or absence of perineural invasion as documented in the pathology report. Assign code 000 if histologic examination of primary site was performed, the pathology report is available for review, and perineural invasion is not mentioned.

Code	Description
000	Perineural invasion not present/not identified
010	Perineural invasion present/identified
988	Not applicable; not collected for this case.
998	No histologic examination of primary site
999	Unknown if perineural invasion present Cannot be assessed Not documented in patient record