Collaborative Stage

Collaborative Stage for TNM 7 - Revised 01/27/2010 [ Schema ]

CS Extension

Note 1: AJCC considers "in situ carcinoma of lacrimal gland" an impossible diagnosis. In CS Version 1 cases with extension code 000 were mapped to Tis in AJCC staging. In CS Version 2, cases with extension code 000 are mapped to TX in AJCC staging. Cases with extension code 000 are mapped to In Situ in Summary Stage 1977 and Summary Stage 2000 for CS Version 1 and CS Version 2.
Note 2: As noted by the AJCC, "As the maximum size of the lacrimal gland is 2cm, T2 and greater tumors will usually extend into the orbital soft tissue."
Note 3: Periosteum is a fibrous membrane that wraps the outer surface of bones.

Code	Description	TNM 7 Map	TNM 6 Map	SS77 Map	SS2000 Map
000	In situ; noninvasive; intraepithelial	TX	TX	IS	IS
100	Tumor confined to lacrimal gland/duct	^	*	L	L
300	Localized, NOS	^	*	L	L
400	OBSOLETE DATA RETAINED V0200 See code 650 Invading periosteum of fossa of lacrimal gland	ERROR	T3	RE	RE
600	Extension to any of the following WITHOUT bone invasion: Globe (eyeball) Optic nerve Orbital soft tissues	^	T4	RE	RE
610	Stated as T1 with no other information on extension	^	*	L	L
620	Stated as T2 with no other information on extension	^	*	L	L
630	Stated as T3 with no other information on extension	^	*	L	L
650	Invasion of periosteum Stated as T4a with no other information on extension	T4a	*	RE	RE
700	Adjacent periorbital bone Stated as T4b with no other information on extension	T4b	T4	RE	RE
750	Adjacent structures: Brain Sinus Pterygoid fossa Temporal fossa	T4c	T4	D	D
800	Further contiguous extension	T4c	T4	D	D
810	Stated as T4c with no other information on extension	T4c	T4	D	D
815	Stated as T4NOS with no other information on extension	T4NOS	T4	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

^ For Extension codes 100, 300, 600, 610, 620, and 630 ONLY, the T category for AJCC 7th Edition staging is assigned based on the value of CS Tumor Size as shown in Extension Size Table AJCC 7. Tumors 2.0 cm or less are T1, tumors between 2.1 and 4.0 cm are T2, and tumors greater than 4 cm are T3.
* For Extension codes 100, 300, 610, 620, 630, and 650 ONLY, the T category for AJCC 6th Edition staging is assigned based on the value of CS Tumor Size as shown in Extension Size Table AJCC 6. For codes 100, 300, 610, 620, and 630, tumors 2.5 cm or less are T1, and tumors between 2.6 and 5 cm are T2. For Extension code 650ONLYtumors 5 cm or less are T3a, and tumors more than 5 cm are T3b.