EOD Primary Tumor
This input is used for staging
Notes
**Note 1:** The bones of the lateral wall of the nasal cavity include the maxilla, the perpendicular plate of the palatine bone, the medial pterygoid plate, the labyrinth and inferior concha of the ethmoid. The roof of the nasal cavity is formed by the nasal bone. The floor of the nasal cavity, which forms the roof of the mouth, is composed of the bones of the hard palate: the horizontal plate of the palatine bone posteriorly and the palatine process of the maxilla anteriorly. **Note 2:** Involvement of or extension to bone includes any type of tumor extension to the bone, such as erosion, invasion, extension, penetration, or destruction. **Note 3:** "Bony invasion" does not include extension to palate, cribriform plate, or pterygoid plates. Extension to these structures is coded separately. **Note 4:** “Bony invasion” does include involvement of perpendicular plate of ethmoid bone or ethmoid air cells. **Note 5:** Code 300 for base of skull, NOS when there is no information available for more specific bony structures in the skull. **Note 6:** Minimal extension to anterior cranial fossa implies tumor pushing through the cribriform plate, but without invasion of the dura or brain.Default
999NAACCR Item
NAACCR #772| Code | Description | SS2018 T |
|---|---|---|
| 000 | In situ, intraepithelial, noninvasive | IS |
| 100 | All sites - Localized, NOS Nasal Cavity (C300) - Invasive tumor confined to one of the following subsites WITHOUT bony invasion + Floor + Lateral wall, including * Meatus (superior, middle, inferior) * Nasal conchae (superior, middle, inferior) + Septum + Vestibule (edge of naris to mucocutaneous junction) - Confined to nasal cavity, NOS Ethmoid Sinus (C311) - Confined to ethmoid sinus + WITH or WITHOUT bony invasion (involvement of perpendicular plate of ethmoid bone or ethmoid air cells) - Confined to ethmoid sinus, NOS | L |
| 150 | Nasal Cavity (C300) - Confined to one subsite listed in code 100 + WITH bony invasion | RE |
| 175 | Nasal Cavity (C300) - Confined to two or more subsites listed in code 100 + WITHOUT bony invasion | L |
| 200 | Nasal Cavity (C300) - Confined to two or more subsites listed in code 100 WITH bony invasion + Choana + Ethmoid sinus - Nasolacrimal duct Ethmoid Sinus (C311) - Confined to both ethmoid sinuses + WITH or WITHOUT bony invasion (involvement of perpendicular plate of ethmoid bone or ethmoid air cells) - Nasal cavity WITH or WITHOUT bony invasion, one or more subsites + Floor + Lateral wall, including * Meatus (superior, middle, inferior) * Nasal conchae (superior, middle, inferior) + Septum + Turbinates + Vestibule (edge of naris to mucocutaneous junction) | RE |
| 300 | All sites - Base of skull, NOS - Cribriform plate Nasal Cavity (C300) - Adjacent organs/structures, NOS - Hard palate Ethmoid Sinus (C311) - Orbital plate - Maxillary sinus - Medial wall or floor of orbit | RE |
| 400 | Nasal Cavity (C300) - Maxillary sinus - Medial wall or floor of orbit - Orbital plate Ethmoid Sinus (C311) - Hard palate | D |
| 500 | All sites - Frontal sinus - Pterygoid plates Ethmoid Sinus (C311) - Anterior cranial fossa (minimal extension) - Anterior orbital contents - Skin of cheek - Skin of nose - Sphenoid sinus | RE |
| 550 | Nasal Cavity (C300) - Anterior cranial fossa (minimal extension) - Anterior orbital contents - Skin of cheek - Skin of nose - Sphenoid sinus Ethmoid Sinus (C311) - Any structure in code 500 + hard palate | D |
| 600 | All sites - Nasopharynx Ethmoid Sinus (C311) - Brain - Clivus - Cranial nerves (other than V2, maxillary division of trigeminal nerve) - Dura - Middle cranial fossa - Orbital apex | RE |
| 700 | All sites - Further contiguous extension Nasal Cavity (C300) - Brain - Clivus - Cranial nerves (other than V2, maxillary division of trigeminal nerve) - Dura - Middle cranial fossa - Orbital apex Ethmoid Sinus (C311) - Any structure in code 600 + hard palate | D |
| 800 | No evidence of primary tumor | U |
| 999 | Unknown; extension not stated Primary tumor cannot be assessed Not documented in patient record Death Certificate Only | U |