Collaborative Stage

Collaborative Stage for TNM 7 - Revised 01/24/2010 [ Schema ]

TongueBase

CS Extension

Note 1: Use code 300 for localized tumor ONLY if no information is available to assign codes 100, 200, 400, 405, or 410.
Note 2: Use code 405, 410, 650, 775, 810, or 815 if the physician's assignment of T category is the ONLY information available about the extent of the tumor.

Code	Description	TNM 7 Map	TNM 6 Map	SS77 Map	SS2000 Map
000	In situ; noninvasive; intraepithelial	Tis	Tis	IS	IS
100	Invasive tumor on one side confined to posterior 1/3 of tongue: Lamina propria Submucosa	^	*	L	L
200	Musculature, intrinsic or NOS	^	*	L	L
300	Localized, NOS Midline tumor	^	*	L	L
400	Tumor crosses midline	^	*	L	L
405	Stated as T1 with no other information on extension	^	*	L	L
410	Stated as T2 with no other information on extension	^	*	L	L
500	Anterior 2/3 of tongue for base of tongue Base of tongue for lingual tonsil Floor of mouth Lower gingiva	^	*	RE	RE
530	Sublingual gland	^	*	RE	RE
600	OBSOLETE DATA RETAINED V0200 Epiglottis, lingual (pharyngeal) surface Glossoepiglottic fold Glossopharyngeal fold Lateral pharyngeal wall Pharyngoepiglottic fold Tonsillar pillars and fossae Tonsils Vallecula Note: Epiglottis, lingual surface assigned to T3 in AJCC 7, see code 640	ERROR	*	RE	RE
610	Glossoepiglottic fold Glossopharyngeal fold Lateral pharyngeal wall Pharyngoepiglottic fold Tonsillar pillars and fossae Tonsils Vallecula	^	*	RE	RE
620	Soft palate, inferior surface or NOS including uvula	^	*	D	RE
640	Epiglottis, lingual surface	T3	*	RE	RE
645	640 + 620 (Epiglottis, lingual surface + Soft palate)	T3	*	D	RE
650	Stated as T3 with no other information on extension	T3	*	RE	RE
710	Mandible for lingual tonsil	T4a	T4a	RE	D
715	710 + 620 (Mandible + Soft palate)	T4a	T4a	D	D
720	Mandible for base of tongue	T4a	T4a	D	D
740	Medial pterygoid muscle Hard palate	T4a	T4a	D	D
750	Musculature of tongue, extrinsic: Genioglossus Geniohyoid Hyoglossus Mylohyoid Palatoglossus Styloglossus	T4a	T4a	D	D
760	Hypopharynx	T4a	T4a	D	D
770	Larynx	T4a	T4a	D	D
775	Stated as T4a with no other information on extension	T4a	T4a	RE	RE
780	Skin	T4b	T4b	D	D
790	Lateral nasopharynx Lateral pterygoid muscle Pterygoid plates	T4b	T4b	D	D
800	OBSOLETE DATA RETAINED V0200 Contiguous extension to: Base of skull Carotid artery Hypopharynx Lateral nasopharynx Lateral pterygoid muscle Pterygoid plates Uvula Note: Uvula combined with soft palate in CSV2, see code 620 Note: Hypopharynx moved to correct mapping in CSV2, see code 760 Note: Lateral nasopharynx, lateral pterygoid muscle, pterygoid plates moved to 790 in CSV2	ERROR	T4b	D	D
805	Further contiguous extension including: Skull base Carotid artery	T4b	T4b	D	D
810	Stated as T4b with no other information on extension	T4b	T4b	D	D
815	Stated as T4 NOS with no other information on extension	T4NOS	T4NOS	RE	RE
820	OBSOLETE DATA CONVERTED V0200 Combined with other contiguous extension, see code 805) Further contiguous extension	ERROR	ERROR	ERROR	ERROR
950	No evidence of primary tumor	T0	T0	U	U
999	Unknown extension Primary tumor cannot be assessed Not documented in patient record	TX	TX	U	U

^For Extension codes 100 - 620 ONLY, the T category for AJCC 7th Edition staging is assigned based on the value of CS Tumor Size, as shown in the Extension Size Table AJCC 7 for this site.
*For Extension codes 100 - 650 ONLY, the T category for AJCC 6th Edition staging is assigned based on the value of CS Tumor Size, as shown in the Extension Size Table AJCC 6 for this site.