Summary Stage 2018: Gum (excluding Melanoma [8720-8790])

Summary Stage 2018

Notes

**Gum (excluding melanomas)** C030-C031, C039, C062 C030 Upper gum C031 Lower gum C039 Gum, NOS C062 Retromolar area (gingiva, trigone) **Note 1:** The following sources were used in the development of this schema * 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/) * Collaborative Stage Data Collection System, version 02.05: https://cancerstaging.org/cstage/Pages/default.aspx * Chapter 7 *Lip and Oral Cavity*, 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:** Periosteum is a fibrous membrane that wraps the outer surface of bones. Cortical bone is the dense compact outer layer of the bone. Trabecular, cancellous, or spongy bone (spongiosa) is a porous network of tissue filling the interior of bone, decreasing weight and allowing room for blood vessels and marrow.

NAACCR Item

NAACCR #764
SS2018 Description
0 In situ: noninvasive, intraepithelial
1 Localized only (localized, NOS) - Confined to gum, NOS - Invasive tumor confined to lamina propria (mucoperiosteum) (stroma)
2 Regional by direct extension only - Bone, NOS - Bone (mandible, maxilla, palatine) - Buccal mucosa (inner cheek) - Cartilage (mandible, maxilla, NOS) - Cortical bone (mandible, maxilla, NOS) - Deep (extrinsic) muscle of tongue + Genioglossus + Hyoglossus + Palatoglossus + Styloglossus - Facial muscle, NOS - Floor of mouth - Hard palate (includes cortical palatine bone) - Labial mucosa (inner lip) - Lateral pharyngeal wall - Lip, NOS - Soft palate including uvula - Subcutaneous soft tissue of face - Tongue mucosa/intrinsic muscle - Tonsillar pillars and fossae - Tonsils - Trabecular bone (mandible, maxilla, palatine, NOS)
3 Regional lymph node(s) involved only - Level I + Level IA - Submental + Level IB - Submandibular (submaxillary), sublingual - Level II - Upper jugular + Jugulodigastric (subdigastric) + Upper deep cervical + Level IIA - Anterior + Level IIB - Posterior - Level III - Middle jugular + Middle deep cervical - Level IV - Lower jugular + Jugulo-omohyoid (supraomohyoid) + Lower deep cervical + Virchow node - Level V - Posterior triangle group + Posterior cervical + Level VA - Spinal accessory + Level VB - Transverse cervical, supraclavicular - Level VI - Anterior compartment group + Laterotracheal + Paralaryngeal + Paratracheal - above suprasternal notch + Perithyroidal + Precricoid (Delphian) + Prelaryngeal + Pretracheal - above suprasternal notch + Recurrent laryngeal - Level VII - Superior mediastinal group (for other mediastinal node(s) see code 7) + Esophageal groove + Paratracheal - below suprasternal notch + Pretracheal - below suprasternal notch - Other groups + Cervical, NOS + Deep cervical, NOS + Facial * Buccinator (buccal) * Mandibular * Nasolabial + Internal jugular, NOS + Parapharyngeal + Parotid * Infraauricular * Intraparotid * Periparotid * Preauricular + Retroauricular (mastoid) + Retropharyngeal + Suboccipital - Regional lymph node(s), NOS + Lymph node(s), NOS
4 Regional by BOTH direct extension AND regional lymph node(s) involved - Codes (2) + (3)
7 Distant site(s)/lymph node(s) involved - Distant site(s) (including further contiguous extension) + Internal carotid artery (encased) + Masticator space + Maxillary sinus/antrum + Nasal cavity + Nose + Pterygoid plates + Skin of face + Skull base + Specified bone (other than mandible, maxilla, palatine) - Distant lymph node(s), NOS + Mediastinal (excluding superior mediastinal node(s), Level VII) - Distant metastasis, NOS + Carcinomatosis + Distant metastasis WITH or WITHOUT distant lymph node(s)
9 Unknown if extension or metastasis
(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) Ridge, J.A., Lydiatt, W.M., Shah, J.P., et al. **Lip and Oral Cavity**. In: Amin, M.B., Edge, S.B., Greene, F.L., et al. (Eds.) AJCC Cancer Staging Manual. 8th Ed. New York: Springer; 2017: 79-94