Collaborative Stage for TNM 7 - Revised 08/23/2010 [ Schema ]
- Note 1: The lacrimal sac is the upper dilated end of the nasolacrimal duct, lodged in a deep groove formed by the lacrimal bone and frontal process of the maxilla. The sac connects the lacrimal canaliculi, which drain tears from the eye's surface, and the nasolacrimal duct, which conveys this fluid into the nasal cavity. The most common epithelial tumors of the lacrimal sac are squamous cell and transitional cell carcinomas.
- Note 2: Periosteum is a fibrous membrane that wraps the outer surface of bones.
- Note 3: AJCC excludes lacrimal sac tumors from 7th Edition staging for the lacrimal gland. Lacrimal sac tumors were not explicitly excluded from AJCC 6th Edition staging.
- Note 4: AJCC considers "in situ carcinoma of lacrimal gland" an impossible diagnosis. 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.
|Code||Description||TNM 7 Map||TNM 6 Map||SS77 Map||SS2000 Map|
|000||In situ, intraepithelial, noninvasive||NA||TX||IS||IS|
|100||Tumor confined to lacrimal sac||NA||*||L||L|
|400||OBSOLETE DATA RETAINED V0200|
See code 405
Invading periosteum of fossa of lacrimal gland/duct
|600||Extension to any of the following WITHOUT bone invasion:|
Orbital soft tissues
|800||Further contiguous extension||NA||T4||D||D|
|950||No evidence of primary tumor||NA||T0||U||U|
|999||Unknown; extension not stated|
Primary tumor cannot be assessed
Not documented in patient record