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NAACCR Data Dictionary
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Version 25
Data Item #3832: Extranodal Extension Head and Neck Pathological

* indicates required field

Length: 3
Source of Standard: NAACCR
Section Name: Stage/Prognostic Factors
Year Implemented: 2018
Version Implemented: 18
Record Types: A, M, C, I

XML NAACCR ID: extranodalExtensionHeadNeckPath

Parent XML Element: Tumor

Required Status:

NPCR Collect: . - No recommendations
CoC Collect: RS - Required, site specific
SEER Collect: RS - Required, site specific
CCCR Collect: RS* - Required, site specific; when available

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 pathological staging extension.

Rationale:

Extranodal Extension Head and Neck Pathological is a Registry Data Collection Variable in AJCC. It was previously collected as Head and Neck SSF# 9 (Common SSF).

Item Data Type:

text

Allowable Values

0.0, 0.1-9.9, X.1, X.2, X.3, X.4, X.7, X.8, X.9

Codes:

0.0

Lymph nodes positive for cancer but ENE not identified or negative

0.1-9.9

ENE 0.1 to 9.9 mm

X.1

ENE 10 mm or greater

X.2

ENE microscopic, size unknown
Stated as ENE (mi)

X.3

ENE major, size unknown
Stated as ENE (ma)

X.4

ENE present, microscopic or major unknown, size unknown

X.7

Surgically resected regional lymph nodes negative for cancer (pN0)

X.8

Not applicable: Information not collected for this case
(If this information is required by your standard setter, use of code X.8 may result in an edit error)

X.9

Not documented in medical record
No surgical resection of regional lymph nodes
ENE not assessed pathologically, or unknown if assessed
Pathological 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.