The short answer
A adult bone cancers evaluation may include specialized imaging, a carefully planned biopsy, pathology, and staging. The goal is to confirm the exact diagnosis and gather information that changes care.
Evaluation may include specialized imaging, a carefully planned biopsy, pathology, and staging.
Not every person needs every possible test.
Planning may depend on subtype, grade, site, spread, function, and treatment at a sarcoma center.
A specialist review can clarify an uncommon or unexpected diagnosis.
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The full explanation.
Where the evaluation starts
Primary bone cancer means cancer that begins in bone. That is different from cancer that started elsewhere and later spread to bone. Pain is the most common symptom of bone cancer. Other signs can include swelling, a lump, unexplained fever, or a bone that breaks without a clear reason.
To help diagnose bone cancer, the doctor asks about your personal and family medical history and does a physical exam. Some findings raise the odds beforehand. Osteosarcoma occurs more often in people who have had high-dose external radiation therapy, especially at the spot where the radiation was given. It also occurs more often after treatment with certain anticancer drugs, particularly alkylating agents. People over 40 with Paget disease of bone are at increased risk of osteosarcoma. Families with Li-Fraumeni syndrome, an inherited condition that raises cancer risk, have increased risk of osteosarcoma and chondrosarcoma. Tell your team about these histories directly. Do not assume the chart already shows them.
The imaging tests and what each one shows
- X-ray can show the location, size, and shape of a bone tumor. It is usually the first picture taken.
- Bone scan. A small amount of radioactive material is injected into a blood vessel to look at bone throughout the body.
- CT scan makes a series of detailed pictures of areas inside the body, taken from different angles.
- MRI uses a powerful magnet linked to a computer to create detailed pictures.
- PET scan. A small amount of radioactive glucose is injected into a vein.
- Angiogram is an x-ray of blood vessels.
Blood tests may measure levels of the enzymes alkaline phosphatase and lactate dehydrogenase. These are numbers your team tracks. They are not a diagnosis on their own.
The biopsy, and why who does it matters
A biopsy is the removal of a tissue sample from the bone tumor. There are three kinds. A needle biopsy makes a small hole in the bone and removes tissue with a needle-like instrument. An excisional biopsy removes the entire lump. An incisional biopsy cuts a sample from the tumor.
One point from NCI is worth acting on before the procedure, not after. Biopsies are best done by an orthopedic oncologist, a doctor experienced in the treatment of bone cancer. The reason is that where the biopsy cut is placed can affect what surgery is possible later. A biopsy cut in the wrong place can limit what a surgeon can do afterward. If a biopsy is being scheduled by someone who does not routinely treat bone tumors, that is a fair thing to raise.
What the exact type changes
The three main types of primary bone cancer behave differently and are treated differently.
Osteosarcoma arises from bone-forming cells in immature bone tissue, usually near the shoulders and knees. Risk is highest among children and adolescents ages 10 to 19. It is more common in males.
Ewing sarcoma usually arises in bone, but may rarely arise in soft tissue. It most often forms in the pelvis, legs, or ribs, though it can form in any bone. Risk is highest in children and adolescents younger than 19.
Chondrosarcoma begins in cartilage tissue. It forms mainly in the pelvis, upper leg, and shoulder. It occurs mainly in adults over age 40 and is usually slow growing.
That difference shows up directly in treatment. Patients with Ewing sarcoma, newly diagnosed or recurrent, usually receive a combination of anticancer drugs before surgery. So do patients with newly diagnosed osteosarcoma. Chemotherapy is not typically used to treat chondrosarcoma or chordoma. So the name on your pathology report decides whether drug treatment comes before an operation at all.
Surgery is the most common treatment. Most patients with bone cancer in a limb can now avoid removal of the entire limb. Most people who have limb-sparing surgery do need reconstructive surgery to regain limb function.
Questions worth asking
- What exact type of bone cancer is this, and did pathology confirm it?
- Who will perform the biopsy, and are they an orthopedic oncologist?
- Will the biopsy incision be placed so it does not limit later surgery?
- Given this type, would chemotherapy come before surgery?
- Is limb-sparing surgery possible here, and would reconstruction be needed?
- What were my alkaline phosphatase and lactate dehydrogenase levels?
- Which results are still pending, and who will call me?
You can call NCI's Cancer Information Service at 1-800-4-CANCER (1-800-422-6237) for information about clinical trials for treatment of bone cancer.
Words to know
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Common questions
Does imaging prove the diagnosis?
Imaging may show a concerning area and its extent, but pathology is often needed to identify the exact tumor type.
Why can results take time?
Special stains, molecular tests, outside-slide review, or multidisciplinary discussion may be needed.
Do I need every staging test?
No. The team selects tests that answer a useful question for the suspected diagnosis.
Can I get another pathology opinion?
You can ask whether expert review would add confidence or change planning.
Questions to ask your doctor
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Sources last checked: 2026-07-22 what this meansLast updated: 2026-08-05Next planned review: 2027-07-22
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How this page was created
Cancer Explained does not originate medical claims. Every page restates guidance already published by the National Cancer Institute, the CDC, the USPSTF and the FDA, in plain language, with the source cited so you can check the original yourself. AI does the translating and organizing; automated checks test claims, citations, clarity and safety before anything publishes. We do not employ clinicians and do not intend to — our work is translation and navigation, not clinical judgment. Nothing here is personal medical advice, and no page can account for your particular situation.
Editorial status: Source checked — This page was written with AI assistance and checked line by line against the sources listed on it. That confirms the sources support what the page says. It is not a medical review, and it does not confirm the page is complete or right for your situation.
Human medical review: not completed. Pages here are not signed off by a clinician before they publish. That is not an oversight we are quietly working around: we restate published guidance and cite it, so the authority belongs to the source rather than to us, and every page names where its claims come from — you can verify us instead of trusting us. Where a volunteer clinician has reviewed a page, their name and credentials appear on it; where no name appears, no clinician has checked it. We are glad to have reviewers and are recruiting them, and we do not hold pages back waiting for one. Use this site to understand your situation and to ask better questions of the people treating you.
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