Malignant Bone Tumors: Osteosarcoma

Primary Site Histology Age at Diagnosis Behavior
C400-C419, C760-C768, C809 9180-9187, 9191-9195, 9200 0-39 3

Notes

9180-9187, 9191-9195, 9200: C400-C419, C760-C768, C809 (ages 0-39) **Note 1:** The following sources were used in the development of this schema * [Toronto Childhood Cancer Stage Guidelines, Version 2, May 2022](https://cancerqld.blob.core.windows.net/content/docs/childhood-cancer-staging-for-population-registries.pdf) * [SEER Extent of Disease (EOD) 2018: Codes and Coding Instructions](https://seer.cancer.gov/tools/staging/eod/2018_Extent_of_Disease_General_Instructions.pdf) * [Summary Stage 2018 - SEER (cancer.gov)](https://seer.cancer.gov/tools/ssm/) **Note 2:** For Bone tumors, Toronto Staging is based on the presence or absence of mets and is collected in Pediatric Mets. * Pediatric Primary Tumor and Pediatric Regional Nodes are collected for surveillance purposes

Data Items

Name Default Value Used for Staging NAACCR Item Required By Metadata
Year of Diagnosis <BLANK> No NAACCR #390
dateOfDiagnosis
None None
Primary Site <BLANK> Yes NAACCR #400
primarySite
All None
Histology <BLANK> Yes NAACCR #522
histologicTypeIcdO3
All None
Behavior <BLANK> Yes NAACCR #523
behaviorCodeIcdO3
All None
Age at Diagnosis <BLANK> Yes NAACCR #230
ageAtDiagnosis
All None
Pediatric Primary Tumor 999 No NAACCR #1136
pediatricPrimaryTumor
None None
Pediatric Regional Nodes 999 No NAACCR #1137
pediatricRegionalNodes
None None
Pediatric Mets 99 Yes NAACCR #1138
pediatricMets
All None

Initial Context

Staging Methods

Expand All | Collapse All

Pediatric Stage

Start

Additional Context
toronto_stage_group = 90
pediatric_group = 90

Next Step

  1. Pediatric Stage
  2. toronto_stage_group
    pediatric_group

End

Outputs

Name Default Value Description NAACCR Item Metadata
Pediatric ID 8a NAACCR #1132
pediatricId
None
Toronto Version Number 2 Version of the Toronto Pediatric Staging System that this version of the Pediatric staging API is based upon. NAACCR #1135
torontoVersionNumber
None
Derived Version {{ctx_alg_version}} For Pediatric ID Version Current - 1133, update all cases when API is updated; Pediatric ID Version Original - 1134, set when the case is coded and do not update None None
Derived Pediatric T 88 NAACCR #1142
derivedPediatricT
None
Derived Pediatric N 88 NAACCR #1143
derivedPediatricN
None
Derived Pediatric M 88 NAACCR #1144
derivedPediatricM
None
Derived Pediatric Stage Group <BLANK> NAACCR #1145
derivedPediatricStageGroup
None
Toronto T N/A NAACCR #1146
torontoT
None
Toronto N N/A NAACCR #1147
torontoN
None
Toronto M N/A NAACCR #1148
torontoM
None
Toronto Stage Group <BLANK> NAACCR #1149
torontoStageGroup
None