NAACCR Item #3831: Extranodal Extension Head and Neck Clinical

Item # Length Source of Standard Year Implemented Version Implemented Year Retired Version Retired
3,831 1 NAACCR 2018 18

NAACCR XML: Tumor.extranodalExtensionHeadNeckClin

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).

Codes

0Regional lymph nodes involved, ENE not present/not identified during diagnostic workup
1Regional lymph nodes involved, ENE present/identified during diagnostic workup, based on physical exam WITH or WITHOUT imaging
2Regional lymph nodes involved, ENE present/identified during diagnostic workup, based on microscopic confirmation
4Regional lymph nodes involved, ENE present/identified, unknown how identified
7No lymph node involvement during diagnostic workup (cN0)
8Not 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)
9Not 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

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.