Summary Stage 2023: Medulloblastoma
Summary Stage 2018
Notes
**Medulloblastoma**
C700-C729: 9362, 9470-9472, 9474-9478, 9501-9504, 9508
C700-C722, C724-C729: 9473
C753: 9362
C700-C729, C753
C700 Cerebral meninges
C701 Spinal meninges
C709 Meninges, NOS
C710 Cerebrum
C711 Frontal lobe
C712 Temporal lobe
C713 Parietal lobe
C714 Occipital lobe
C715 Ventricle, NOS
C716 Cerebellum, NOS
C717 Brain stem
C718 Overlapping lesion of brain
C719 Brain, NOS
C720 Spinal cord
C721 Cauda equina
C722 Olfactory nerve
C723 Optic nerve
C724 Acoustic nerve
C725 Cranial nerve, NOS
C728 Overlapping lesion of brain and central nervous system
C729 Nervous system, NOS
C753 Pineal Gland
**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
* Brain and Spinal Cord, from the AJCC Cancer Staging System Version 9 (2022). Used with permission of the American College of Surgeons, Chicago, Illinois
**Note 2:** This is a new Summary Stage chapter for cases diagnosed 2023+. For cases diagnosed prior to 2023+, use the appropriate Summary Stage chapter based on primary site
* C700, C710-C719: Summary Stage Chapter *Brain*
* C701, C709, C720-C729: Summary Stage Chapter *CNS Other*
* C753: Summary Stage Chapter *Intracranial Gland*
**Note 3:** Assign code 8 for benign or borderline tumors.
**Note 4:** Codes 0, 3, and 4 are not applicable for this chapter.
| SS2018 |
Description |
| 1 |
Localized only (Localized, NOS)
All sites
* Single tumor with no invasion or seeding to other structures
Confined to site of origin, NOS
Localized, NOS |
| 2 |
Regional, NOS
Tumor crosses the midline |
| 7 |
Distant site(s)/lymph node(s) involved
* Distant site(s) (including further contiguous extension)
* All Sites
* Blood
* Bone (including skull)
* Bone marrow
* "Drop" metastasis
* Extra-neural metastasis, NOS
* Gross spinal subarachnoid seeing
* Intracranial spread beyond primary site
* Major blood vessel(s)
* Meninges (e.g., dura)
* Microscopic confirmation of tumor cells present in CSF by cytology (circulating cells in cerebral spinal fluid)
* Multiple/multifocal tumors
* Nerves (cranial, NOS)
* Tumor invades or encroaches upon ventricular system
* Visible metastasis in cervicomedullary (junction)
* Brain tumors (C700, C710-C719)
* Anterior cranial fossa
* Brain stem
* Cerebellum
* Cerebrum (cerebral hemisphere)
* Contralateral hemisphere
* Hypothalamus
* Middle cranial fossa
* Nasal cavity
* Nasopharynx
* Other direct extension outside CNS
* Pallium
* Posterior cranial fossa
* Posterior pharynx
* Suprasellar brain
* Tapetum
* Thalamus
* CNS Tumors (C701, C709, C720-C729)
* Adjacent connective tissue
* Adjacent muscle
* Brain
* Eye
* Sphenoid and frontal sinuses(skull)
* Pineal Gland (C753)
* Adjacent connective/soft tissue
* Cavernous sinus
* Infratentorial and central brain
* Distant lymph node(s), NOS
* Distant metastasis, NOS
* Carcinomatosis
* Distant metastasis WITH or WITHOUT distant lymph node(s) |
| 8 |
Benign or borderline brain |
| 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) Laws, E.R., Curran, W.J., et al. **Brain and Spinal Cord**. In: Amin, M.B., Edge, S.B., Greene, F.L., et al. (Eds.) AJCC Cancer Staging Manual. 8th Ed. New York: Springer; 2017
