Summary Stage 2018: Nasal Cavity and Paranasal Sinuses
Summary Stage 2018
**Nasal cavity and Paranasal Sinuses**
8000-8700, 8941, 8982, 9700-9701
C300 Nasal cavity (excluding nose, NOS C760)
C310 Maxillary sinus
C311 Ethmoid sinus
**Note 1:** The following sources were used in the development of this chapter
* SEER Extent of Disease 1988: Codes and Coding Instructions (3rd Edition, 1998) (https://seer.cancer.gov/archive/manuals/EOD10Dig.3rd.pdf)
* SEER Summary Staging Manual-2000: Codes and Coding Instructions (https://seer.cancer.gov/tools/ssm/ssm2000/)
* Collaborative Stage Data Collection System, version 02.05: https://cancerstaging.org/cstage/Pages/default.aspx
* Chapter 12 *Nasal Cavity and Paranasal Sinuses*, in the AJCC Cancer Staging Manual, Eighth Edition (2017) published by Springer International Publishing. Used with permission of the American College of Surgeons, Chicago, Illinois.
**Note 2:** See the following chapters for the listed histologies
* 8710-8714, 8800-8934, 8940, 8950-8981, 8983-9137, 9141-9582: *Soft Tissue*
* 8720-8790: *Melanoma Head and Neck*
* 8935-8936: *GIST*
* 9140: *Kaposi Sarcoma*
**Note 3:** 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 4:** Involvement of or extension to bone includes any type of tumor extension to the bone, such as erosion, invasion, extension, penetration, or destruction.
**Note 5:** "Bony invasion" does not include extension to palate, cribriform plate, or pterygoid plates. Extension to these structures is coded separately.
**Note 6:** “Bony invasion” does include involvement of perpendicular plate of ethmoid bone or ethmoid air cells.
**Note 7:** Code 2 for base of skull, NOS when there is no information available for more specific bony structures in the skull.
**Note 8:** Minimal extension to anterior cranial fossa implies tumor pushing through the cribriform plate, but without invasion of the dura or brain.
(1) Fritz AG, Ries LAG (eds). **SEER Extent of Disease 1988: Codes and Coding Instructions (3rd Edition, 1998)**, National Cancer Institute, NIH Pub. No. 98-2313, Bethesda, MD, 1998
(2) Young JL Jr, Roffers SD, Ries LAG, Fritz AG, Hurlbut AA (eds.). **SEER Summary Staging Manual-2000: Codes and Coding Instructions**, National Cancer Institute, NIH Pub. No. 01-4969, Bethesda, MD, 2001.
(3) Collaborative Stage Work Group of the American Joint Committee on Cancer. **Collaborative Stage Data Collection System User Documentation and Coding Instructions, version 02.05**. American Joint Committee on Cancer (Chicago, IL)
(4) Gress, D.M., Edge, S.B., Gershenwald, J.E., et al. **Principles of Cancer Staging**. In: Amin, M.B., Edge, S.B., Greene, F.L., et al. (Eds.) AJCC Cancer Staging Manual. 8th Ed. New York: Springer; 2017: 3-30
(5) Lydiatt, W.M., Patel, S.G., Shah, J.P., et al. **Staging Head and Neck Cancers**. In: Amin, M.B., Edge, S.B., Greene, F.L., et al. (Eds.) AJCC Cancer Staging Manual. 8th Ed. New York: Springer; 2017: 55-65
(6) Kraus, D.H., Lydiatt, W.M., Shah, J.P., et al. **Nasal Cavity and Paranasal Sinuses**. In: Amin, M.B., Edge, S.B., Greene, F.L., et al. (Eds.) AJCC Cancer Staging Manual. 8th Ed. New York: Springer; 2017: 137-147