First, define what it is
The diagnosis combines clinical history, physical examination, X-ray, ultrasound, CT or MRI. If a sarcoma is suspected, the biopsy must be planned by the team that will treat the tumor.
Musculoskeletal tumor wiki
An educational guide for patients on bone and soft-tissue tumors: benign, intermediate/locally aggressive and malignant, including sarcomas.
BenignThey do not spread
They are usually observed, or treated only if they cause pain, deformity, fracture or diagnostic doubt.
IntermediateLocally aggressive
They can grow, damage neighboring tissue or come back; they rarely metastasize.
SarcomasThey need an expert team
Management combines imaging, a planned biopsy and multidisciplinary treatment.
Warning signs
These signs do not necessarily mean cancer, but they warrant evaluation before operating on or needling a mass.
- A soft-tissue mass that grows, is larger than 5 cm, or is deep.
- Persistent, night-time or progressive bone pain, especially if it limits activity.
- A fracture from minimal trauma, or an aggressive bone lesion on an X-ray.
- A lump that comes back after previous surgery.
- Neurological symptoms, rapid swelling, or pain associated with a mass.
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Treatment depends on behavior
Some lesions are only observed. Others need local surgery. Sarcomas need multidisciplinary management with surgery, radiotherapy, chemotherapy or systemic therapies depending on the case.
Prognosis is not a single number
Age, site, size, grade, stage, subtype, surgical margins and treatment response all matter. Population statistics do not predict what will happen in a specific person.
Entries by tumor
Each entry summarizes epidemiology, features, treatment and prognosis in patient-friendly language. References appear at the end of each entry; images keep their citation and license in the caption.
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Epidemiology
A common benign bone tumor, typical of children and adolescents, arising near the growth plates. If there are many osteochondromas, new pain, or growth after skeletal maturity, it is worth evaluating a hereditary form or a local complication.
Basic features
An outward-growing prominence of bone and cartilage; it may rub against tendons or nerves, or form a painful bursa.
Usual treatment
An asymptomatic osteochondroma needs no treatment; it is worth seeking advice if new pain or growth appears after development is complete, because of the small risk of transformation. Removal is indicated for pain, deformity, compression, atypical growth, or diagnostic uncertainty.
Outcomes and prognosis
The outlook is excellent. Malignant transformation into secondary chondrosarcoma is rare in solitary lesions and somewhat more frequent in hereditary multiple disease, where it is estimated at around 2–10%; recurrence after complete removal is low.
This information is general and does not replace a medical evaluation. A musculoskeletal tumor must be interpreted together with imaging, physical examination, biopsy when appropriate and each patient's context.
Specialist evaluation of musculoskeletal tumors
If you have a mass, a bone lesion or a report suggesting a tumor, book an evaluation before any surgery: operating without the diagnosis can compromise later treatment.
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