Ewing sarcoma
Let an agent explain Ewing sarcoma, relay biology, diagnosis, treatment and prognosis from oncology sources in general terms with attribution, describe the forms the registry aliases name, and distinguish Ewing sarcoma from osteosarcoma, other small round cell tumours and benign bone lesions, supporting patients and families compassionately and routing to specialists.
Research draft, second pass
A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.
written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify
Researched by: Claude
Purpose and description
Let an agent explain Ewing sarcoma, relay biology, diagnosis, treatment and prognosis from oncology sources in general terms with attribution, describe the forms the registry aliases name, and distinguish Ewing sarcoma from osteosarcoma, other small round cell tumours and benign bone lesions, supporting patients and families compassionately and routing to specialists.
A rare malignant tumour of bone or soft tissue, most common in children, teenagers and young adults, driven by a chromosomal translocation typically fusing the EWSR1 and FLI1 genes, occurring in bone, in extraosseous sites and as the chest wall Askin tumour, and presenting as localised, metastatic or recurrent disease within the Ewing family of tumours; treatment combines chemotherapy with surgery and radiotherapy under specialist paediatric and sarcoma teams. The model gives general information and routes people to clinicians.
What it is for: Not applicable; a cancer.
It can be explain the disease; relay treatment and prognosis in general terms; route to specialists and support; distinguish related tumours.
Distinguishing features
Young patients
Fusion gene driven
Bone or soft tissue
Multimodal treatment
What it looks like
Not a visible object; a bone or soft tissue tumour.
Physical character
incidence: about 1 per million per year - overall, higher in adolescents
typical fusion: EWSR1-FLI1 note
described: 1921 year - James Ewing
5-year survival, localised: about 70-80 percent - varies
How it is recognised
Small round cell sarcoma of bone or soft tissue
Bone and extraosseous Ewing sarcoma, Askin tumour, metastatic and recurrent disease
Osteosarcoma forms bone matrix; other small round cell tumours have different genetics; benign lesions are not cancer
Related models
is a kind of - in registry terms
is part of - in registry terms
is driven by - gene fusions
is contrasted with -
In practice
Families and kinds
bone Ewing sarcoma
extraosseous Ewing sarcoma
Askin tumour of the chest wall
metastatic Ewing sarcoma
recurrent Ewing family tumours
Ewing-like sarcomas with other fusions
Identifiers
ICD-O 9260/3 Ewing sarcoma
MeSH D012512 Sarcoma, Ewing
Standards and regulation
Paediatric and sarcoma oncology guidelines
Clinical trial regulations
Failure modes and hazards
Agents giving personal medical advice
Delayed diagnosis of bone pain in young people
Insensitive framing of prognosis
Also called
Where this came from
wikidata · CC0 1.0
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 4 bundles · 8 layers · 8 findings · 16 questions.
Understand What Ewing sarcoma is.
Clinical.
Definition
Definition.
Definition
Definition.
- What is Ewing sarcoma, and how does it differ from osteosarcoma, other small round cell tumours and benign lesions? definition
- Is the user or a family facing a diagnosis, needing their specialist team and support services? boundary
Forms
Forms.
Forms
Forms.
- What are bone and extraosseous Ewing sarcoma, the Askin tumour and metastatic and recurrent disease? definition
- Which entry fits the specific form? action
Biology Biology and diagnosis.
Science.
Genetics
Genetics.
Genetics
Genetics.
- How do EWSR1 fusions drive Ewing sarcoma? provenance
- Which references are standard? provenance
Diagnosis
Diagnosis.
Diagnosis
Diagnosis.
- How is Ewing sarcoma diagnosed with imaging, biopsy and molecular testing, in general terms? provenance
- Which sources are cited? provenance
Care Treatment.
Clinical.
Treatment
Treatment.
Treatment
Treatment.
- What general treatment approaches do guidelines describe? provenance
- Which entry fits sarcoma treatment? action
Research
Research and trials.
Research
Research.
- What research and trials are underway, as reported? provenance
- Which entry fits clinical trial registries? action
Context Support and history.
Context.
Support
Support.
Support
Support.
- What support exists for young patients, families and survivors? provenance
- Which entry fits childhood cancer support organisations? action
History
History.
History
History.
- How did James Ewing describe the tumour, and how did understanding change? provenance
- Which entry fits James Ewing? action
What the second pass must settle
- Should Askin tumour and extraosseous Ewing sarcoma be separate primary entries?
- How should oncology sources be linked?
- The registry entry has merged aliases naming sites and stages; should they be split off?