An indication of the additional Ann Arbor Staging System stage designation based on extranodal involvement.
National Codes:
| E | Extranodal involvement |
| 0 | No Extranodal involvement |
This attribute is also known by these names:
| Context | Alias |
|---|---|
| formerly | ANN ARBOR EXTRANODALITY INDICATOR |
| plural | ANN ARBOR EXTRANODALITY INDICATION CODES |