NAACCR Item #3909: Perineural Invasion

Item # Length Source of Standard Year Implemented Version Implemented Year Retired Version Retired
3909 1 NAACCR 2018 18

NAACCR XML: Tumor.perineuralInvasion

Perineural Invasion, within or adjacent to the primary tumor, is a negative prognostic factor for cutaneous squamous cell carcinomas of the head and neck and carcinomas of the colon and rectum, eyelid and lacrimal gland.
Perineural Invasion is a Registry Data Collection Variable in AJCC. It was previously collected as Colon and Rectum CS SSF# 8 and Lacrimal Gland CS SSF# 4.
0 Perineural invasion not identified/not present
1 Perineural invasion identified/present
8 Not applicable: Information not collected for this case
(If this information is required by your standard setter, use of code 8 may result in an edit error.)
9 Not documented in medical record
Pathology report does not mention perineural invasion
Cannot be determined by the pathologist
Perineural invasion not assessed or unknown if assessed
Each Site-Specific Data Item (SSDI) applies only to selected primary sites, histologies, and years of diagnosis. Depending on applicability and standard-setter requirements, SSDIs may be left blank.