NAACCR Item #3909: Perineural Invasion
|Item #||Length||Source of Standard||Year Implemented||Version Implemented||Year Retired||Version Retired|
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.