EOD Primary Tumor
This input is used for staging
Notes
**Note 1:** The cortex of a bone is the dense outer shell that provides strength to the bone; the spongy center of a bone is the cancellous portion. The periosteum of the bone is the fibrous membrane covering of a bone that contains the blood vessels and nerves; the periosteum is similar to the capsule on a visceral organ. **Note 2:** The number of vertebral segments involved by the primary tumor determines the appropriate EOD Primary Tumor (codes 100 through 400). The five vertebral segments used in these codes are: • Body (left) • Body (right) • Pedicle (left) • Pedicle (right) • Posterior elementDefault
999NAACCR Item
NAACCR #772Code | Description | SS2018 T |
---|---|---|
100 | Involvement of one vertebral segments | L |
200 | Involvement of two adjacent vertebral segments | L |
300 | Involvement of three adjacent vertebral segments | L |
400 | Involvement of four or more adjacent vertebral segments | L |
450 | Confined to spine, NOS (number of segments involved not known) Localized, NOS | L |
500 | Involvement of nonadjacent vertebral segments | RE |
650 | Spinal canal | RE |
700 | Gross vascular invasion Tumor thrombus in great vessels | D |
750 | Extension beyond periosteum to surrounding tissues, including adjacent skeletal muscle(s) | RE |
800 | No evidence of primary tumor | U |
999 | Unknown; extension not stated Primary tumor cannot be assessed Not documented in medical record Death Certificate Only | U |