An indication of whether there is any perineural invasion of skin cancer.
National Codes:
| N | No, perineural invasion not present |
| Y | Yes, perineural invasion present |
| U | Uncertain whether perineural invasion is present or not |
| 9 | Not known |
References:
National Cancer Dataset Version 2.1_ISB October 2002
This attribute is also known by these names:
| Context | Alias |
|---|---|
| plural | PERINEURAL INVASIONS |