Collaborative Stage

Collaborative Stage for TNM 7 - Revised 02/16/2009 [ Schema ]

MiddleEar

CS Lymph Nodes

Note 1: For head and neck schemas, this field includes all lymph nodes defined as Levels I-VII and Other by AJCC. The complete definitions are provided in the General Instructions.
Note 2: For head and neck schemas, additional information about lymph nodes (size of involved nodes, extracapsular extension, levels involved, and location of involved nodes above or below the lower border of the cricoid cartilage)is coded in Site-Specific Factors 1,3-9
Note 3: If laterality of lymph nodes is not specified, assume nodes are ipsilateral. Midline nodes are considered ipsilateral.
Note 4: For head and neck cancers, if lymph nodes are described only as "supraclavicular", try to determine if they are in Level IV (deep to the sternocleidomastoid muscle, in the lower jugular chain) or Level V (in the posterior triangle, inferior to the transverse cervical artery) and code appropriately. If the specific level cannot be determined, consider them as Level V nodes.

Code	Description	TNM 7 Map	TNM 6 Map	SS77 Map	SS2000 Map
000	None; no regional lymph node involvement	NA	NA	NONE	NONE
100	Single positive ipsilateral regional node: Level I node Level IA - Submental, Sublingual Level IB - Submandibular (submaxillary) Level II node - Upper jugular Jugulodigastric (subdigastric) Upper deep cervical Other groups: Retroauricular (mastoid) Retropharyngeal Cervical, NOS Deep cervical, NOS Internal jugular, NOS Regional lymph node, NOS	NA	NA	RN	RN
120	Single positive ipsilateral regional node: Level III node - Middle jugular Middle deep cervical Level IV node - Lower jugular Jugulo-omohyoid (supraomohyoid) Lower deep cervical Virchow node Level V node - Posterior triangle group Posterior cervical Level VA - Spinal accessory Level VB - Transverse cervical, supraclavicular Level VI node - Anterior compartment group Laterotracheal Paralaryngeal Paratracheal - above suprasternal notch Precricoid (Delphian) Pretracheal - above supreasternal notch Recurrent laryngeal Level VII node - Superior mediastinal notch (for other mediastinal nodes see CS Mets at DX) Esophageal groove Paratracheal - below suprasternal notch Pretracheal - below suprasternal notch Other groups: Facial: Buccinator (buccal) Mandibular Nasolabial Parotid: Infra-auricular Intraparotid Periparotid Preauricular Parapharyngeal Sublingual Sub-occipital Supraclavicular, NOS (See Note 4)	NA	NA	D	D
800	Lymph nodes, NOS	NA	NA	RN	RN
999	Unknown; not stated Regional lymph nodes cannot be assessed Not documented in patient record	NA	NA	U	U