Collaborative Stage

Collaborative Stage for TNM 7 - Revised 10/28/2009 [ Schema ]

FloorMouth

CS Extension

Note 1: Periosteum is a fibrous membrane that wraps the outer surface of bones. Cortical bone is the dense compact outer layer of bone. Trabecular, cancellous, or spongy bone (spongiosa) is a porous network of tissue filling the interior of bone, decreasing weight and allowing room for blood vessels and marrow.
Note 2: AJCC assigns T value based on size when bone involvement is limited to the cortex. Involvement through cortical bone is required for assignment of T4a.
Note 3: Use code 300 for localized tumor ONLY if no information is available to assign code 100, 400, 405, 410, or 415.
Note 4: Use code 405, 410, 415, 780, 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: Lamina propria Submucosa	^	*	L	L
300	Localized, NOS	^	*	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
415	Stated as T3 with no other information on extension	^	*	L	L
500	Anterior 2/3 of tongue Base of tongue Gingiva (alveolar ridge), lower Periosteum of mandible	^	*	RE	RE
530	Sublingual gland, including ducts Submandibular (submaxillary) glands, including ducts	^	*	RE	RE
535	Cortical bone of mandible Mandible, NOS Cortical bone, NOS (not specified in higher codes) Bone, NOS (not specified in higher codes)	^	*	RE	RE
545	Cortical bone of maxilla Maxilla, NOS	^	*	D	D
550	Subcutaneous soft tissue of chin/neck	^	*	RE	RE
600	Epiglottis Glossoepiglottic fold Glossopharyngeal sulcus Lateral pharyngeal wall Pharyngeal (lingual) surface Pharyngoepiglottic fold Tonsillar pillars and fossae Tonsils Vallecula	^	*	RE	RE
605	(550 or 600) + 545 (Any structure in code 550 or 600 + Any structure in code 545)	^	*	D	D
620	Deep (extrinsic) muscle of tongue: Genioglossus Geniohyoid Hyoglossus Mylohyoid Palatoglossus Styloglossus	T4a	T4a	L	L
630	OBSOLETE DATA RETAINED V0200 (620) + any of (500, 530, or 600)	ERROR	T4a	RE	RE
635	620 + (500, 530, 535, 550, or 600) (Any structure in code 620 + Any structure in code 500, 530, 535, or 600)	T4a	T4a	RE	RE
640	OBSOLETE DATA CONVERTED V0200 Assign to T1-3 category per site curator, see code 550 Subcutaneous soft tissue of chin/neck	ERROR	ERROR	ERROR	ERROR
645	635 + 545 (Any structure in code 635 + Any structure in code 545)	T4a	T4a	D	D
700	OBSOLETE DATA RETAINED V0200 Mandible	ERROR	T4a	RE	RE
725	Trabecular bone of mandible	T4a	T4a	RE	RE
760	Skin of undersurface of chin/neck	T4a	T4a	RE	RE
765	(725 or 760) + 545 (Any structure in code 725 or 760 + Any structure in code 545)	T4a	T4a	D	D
770	OBSOLETE DATA RETAINED V0200 Maxillary sinus (antrum)	ERROR	T4a	D	D
775	Trabecular bone of maxilla Maxillary sinus (antrum)	T4a	T4a	D	D
780	Stated as T4a with no other information on extension	T4a	T4a	RE	RE
788	Specified bone (other than mandible, maxilla, or bones in codes 790 and 800)	T4b	T4b	D	D
790	Masticator space Pterygoid plates	T4b	T4b	D	D
800	OBSOLETE DATA RETAINED V0200 Further contiguous extension: Base of skull Masticator space Pterygoid plates	ERROR	T4b	D	D
805	Further contiguous extension Skull base Internal carotid artery (encased)	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
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

^Note: For Extension codes 100 through 605 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 for this site.
*Note: For Extension codes 100 through 605 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 for this site.