Summary Stage 2018: Thymus

Summary Stage 2018

Notes

Thymus

8000-8700, 8720-8790, 9700-9701

C379
C379 Thymus

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 35 Thymus, 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, 8940-9137, 9141-9582: Soft Tissue
  • 8935-8936: GIST
  • 9140: Kaposi Sarcoma

NAACCR Item

NAACCR #764
SS2018 Description
0

In situ: noninvasive, intraepithelial

1

Localized only (localized, NOS)

  • Confined to thymus, NOS
  • No mediastinal or pleura involvement or UNKNOWN if involved
2

Regional by direct extension only

  • Brachiocephalic vein
  • Chest wall
  • Confined to thymus WITH mediastinal or pleural involvement
  • Direct invasion of pericardium
  • Extrapericardial pulmonary artery or vein
  • Lung
  • Phrenic nerve
  • Superior vena cava
3

Regional lymph node(s) involved only

  • Ascending aorta
  • Cervical (low anterior)
  • Hilar
  • Internal mammary
  • Lower jugular
  • Mediastinal (lower, middle, NOS)
  • Para-aortic
  • Paratracheal (lower, upper, NOS)
  • Peri-thymic
  • Peri-thyroid
  • Pericardial
  • Phrenic (inferior, superior)
  • Precricoid/delphian
  • Pretracheal
  • Prevascular
  • Subaortic/aortopulmonary window
  • Subcarinal
  • Supraclavicular/venous angle: confluence of internal jugular and subclavian vein
  • 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)
    • Extrathoracic sites
    • Separate pleural or pericardial nodule(s)
  • Distant lymph node(s), NOS
  • Distant metastasis, NOS
    • Carcinomatosis
    • Distant metastasis WITH or WITHOUT distant lymph node(s)
      • OR with pleural or pericardial nodule(s) metastasis
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) Detterbeck, F.C., Marom, E.M. Thymus. In: Amin, M.B., Edge, S.B., Greene, F.L., et al. (Eds.) AJCC Cancer Staging Manual. 8th Ed. New York: Springer; 2017: 423-429