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Version 25
Data Item #3831: Extranodal Extension Head and Neck Clinical

* indicates required field

Length: 1
Source of Standard: NAACCR
Section Name: Stage/Prognostic Factors
Year Implemented: 2018
Version Implemented: 18
Record Types: A, M, C, I

XML NAACCR ID: extranodalExtensionHeadNeckClin

Parent XML Element: Tumor

Required Status:

NPCR Collect: . - No recommendations
CoC Collect: RS - Required, site specific
SEER Collect: RC - Collected by SEER from CoC-accredited hospitals
CCCR Collect: . - No recommendations

Description:

Extranodal extension (ENE) is defined as "the extension of a nodal metastasis through the lymph node capsule into adjacent tissue" and is a prognostic factor for most head and neck tumors. This data item pertains to clinical staging extension.

Rationale:

Extranodal Extension Head and Neck Clinical is a Registry Data Collection Variable in AJCC. It was previously collected as Head and Neck SSF# 8 (Common SSF).

Item Data Type:

digits

Allowable Values

0-2, 4, 7-9

Codes:

0

Regional lymph nodes involved, ENE not present/not identified during diagnostic workup

1

Regional lymph nodes involved, ENE present/identified during diagnostic workup, based on physical exam WITH or WITHOUT imaging

2

Regional lymph nodes involved, ENE present/identified during diagnostic workup, based on microscopic confirmation

4

Regional lymph nodes involved, ENE present/identified, unknown how identified

7

No lymph node involvement during diagnostic workup (cN0)

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
ENE not assessed during diagnostic workup, or unknown if assessed
Clinical assessment of lymph nodes not done, or unknown if done

Code Notes:

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.