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{
"id" : "extension_bay",
"algorithm" : "cs",
"version" : "02.05.50",
"name" : "Extension",
"title" : "CS Extension",
"notes" : "**Note 1**: Involvement of or extension to bone includes any type of tumor extension to the bone, such as erosion, invasion, extension, penetration, or destruction.\n\n**Note 2**: Extension to structures in codes 400 and higher may be from one or both ethmoid sinuses.\n\n**Note 3**: In code 700, \"minimal extension to anterior cranial fossa\" implies tumor pushing through cribriform plate, but without invasion of the dura or brain.\n\n**Note 4**: Code Base of skull NOS only if no information available to code to more specific bony structures in skull.\n\n**Note 5**: Use code 300 for localized tumor only if no information is available to assign codes 100, 120, 160, or 315.\n\n**Note 6**: Use code 315 410, 680, 725, 810, or 815 if the physician's assignment of T category is the only information available about the extent of the tumor.",
"last_modified" : "2015-05-27T16:19:06.855Z",
"definition" : [ {
"key" : "extension",
"name" : "Code",
"type" : "INPUT"
}, {
"key" : "description",
"name" : "Description",
"type" : "DESCRIPTION"
}, {
"key" : "ajcc7_t",
"name" : "AJCC 7 T",
"type" : "ENDPOINT"
}, {
"key" : "ajcc6_t",
"name" : "AJCC 6 T",
"type" : "ENDPOINT"
}, {
"key" : "t77",
"name" : "Summary Stage 1977 T",
"type" : "ENDPOINT"
}, {
"key" : "t2000",
"name" : "Summary Stage 2000 T",
"type" : "ENDPOINT"
} ],
"rows" : [ [ "000", "In situ, intraepithelial, noninvasive", "VALUE:Tis", "VALUE:Tis", "VALUE:IS", "VALUE:IS" ], [ "120", "Invasive tumor confined to left or right ethmoid sinus\nWITHOUT bony involvement", "VALUE:T1", "VALUE:T1", "VALUE:L", "VALUE:L" ], [ "140", "OBSOLETE DATA CONVERTED V0200\nSee code 320\n\nConfined to both ethmoid sinuses without bone involvement", "ERROR:", "ERROR:", "ERROR:", "ERROR:" ], [ "160", "Confined to ethmoid sinus, NOS\n WITHOUT bony involvement", "VALUE:T1", "VALUE:T1", "VALUE:L", "VALUE:L" ], [ "220", "Invasive tumor confined to either left or right ethmoid\nWITH bony invasion (involvement of perpendicular plate of ethmoid bone or ethmoid air cells)", "VALUE:T1", "VALUE:T1", "VALUE:L", "VALUE:L" ], [ "240", "OBSOLETE DATA CONVERTED V0200\nSee code 340\n\nConfined to both ethmoid sinuses\nWITH bony invasion (involvement of perpendicular plate of ethmoid bone or ethmoid air cells)", "ERROR:", "ERROR:", "ERROR:", "ERROR:" ], [ "260", "Confined to ethmoid sinus, NOS\nWITH bony invasion (involvement of perpendicular plate of ethmoid bone or ethmoid air cells)", "VALUE:T1", "VALUE:T1", "VALUE:L", "VALUE:L" ], [ "300", "Localized, NOS", "VALUE:T1", "VALUE:T1", "VALUE:L", "VALUE:L" ], [ "315", "Stated as T1 with no other information on extension", "VALUE:T1", "VALUE:T1", "VALUE:L", "VALUE:L" ], [ "320", "Confined to both ethmoid sinuses \nWITHOUT bony involvement", "VALUE:T2", "VALUE:T2", "VALUE:RE", "VALUE:RE" ], [ "340", "Confined to both ethmoid sinuses\n WITH bony invasion (involvement of perpendicular plate of ethmoid bone or ethmoid air cells)", "VALUE:T2", "VALUE:T2", "VALUE:RE", "VALUE:RE" ], [ "400", "Extension to nasal cavity with or without bony invasion (Involvement of perpendicular plate of ethmoid bone or ethmoid air cells):\n Floor\n Lateral wall\n Nasal vestibule\n Nasal cavity, NOS\n Septum\n Turbinates", "VALUE:T2", "VALUE:T2", "VALUE:RE", "VALUE:RE" ], [ "410", "Stated as T2 with no other information on extension", "VALUE:T2", "VALUE:T2", "VALUE:RE", "VALUE:RE" ], [ "620", "Base of skull, NOS", "VALUE:T3", "VALUE:T3", "VALUE:RE", "VALUE:RE" ], [ "630", "Cribriform plate", "VALUE:T3", "VALUE:T3", "VALUE:RE", "VALUE:RE" ], [ "640", "Medial wall or floor of orbit\nOrbital plate", "VALUE:T3", "VALUE:T3", "VALUE:RE", "VALUE:RE" ], [ "650", "Maxillary sinus", "VALUE:T3", "VALUE:T3", "VALUE:RE", "VALUE:RE" ], [ "660", "Hard palate", "VALUE:T3", "VALUE:T3", "VALUE:D", "VALUE:D" ], [ "680", "Stated as T3 with no other information on extension", "VALUE:T3", "VALUE:T3", "VALUE:RE", "VALUE:RE" ], [ "700", "Anterior orbital contents\nSkin of nose\nSkin of cheek\nAnterior cranial fossa (minimal extension) (see Note 3)\nPterygoid plates\nSphenoid sinus\nFrontal sinus", "VALUE:T4a", "VALUE:T4a", "VALUE:RE", "VALUE:RE" ], [ "720", "700 + 660 \n\nAny structure in code 700 plus hard palate", "VALUE:T4a", "VALUE:T4a", "VALUE:D", "VALUE:D" ], [ "725", "Stated as T4a with no other information on extension", "VALUE:T4a", "VALUE:T4a", "VALUE:RE", "VALUE:RE" ], [ "760", "Orbital apex\nDura\nBrain\nMiddle cranial fossa\nCranial nerves (other than V2, maxillary division of trigeminal nerve) \nNasopharynx\nClivus", "VALUE:T4b", "VALUE:T4b", "VALUE:RE", "VALUE:RE" ], [ "780", "760 + 660 \n\nAny structure in code 760 plus palate", "VALUE:T4b", "VALUE:T4b", "VALUE:D", "VALUE:D" ], [ "800", "Further contiguous extension", "VALUE:T4b", "VALUE:T4b", "VALUE:D", "VALUE:D" ], [ "810", "Stated as T4b with no other information on extension", "VALUE:T4b", "VALUE:T4b", "VALUE:D", "VALUE:D" ], [ "815", "Stated as T4 [NOS] with no other information on extension", "VALUE:T4NOS", "VALUE:T4NOS", "VALUE:RE", "VALUE:RE" ], [ "950", "No evidence of primary tumor", "VALUE:T0", "VALUE:T0", "VALUE:U", "VALUE:U" ], [ "999", "Unknown; extension not stated\nPrimary tumor cannot be assessed\nNot documented in patient record", "VALUE:TX", "VALUE:TX", "VALUE:U", "VALUE:U" ] ]
}