Diagnosing Osteosarcoma

Overview

Osteosarcoma is a malignant bone tumor that primarily affects children and young people. To diagnose osteosarcoma, a variety of examinations, tests, and procedures are typically performed. These include:

• Medical history and physical examination: A healthcare professional will ask about a person's symptoms and medical history. They will also perform a physical examination to check for any lumps or unusual findings.
• Imaging tests: Several imaging tests can help confirm a diagnosis of osteosarcoma by providing detailed images of the affected area. These tests include:
  • X-rays: Detailed images of the bones that may show new bone formation.
  • Magnetic resonance imaging (MRI): Uses radio waves and magnets to produce detailed images of internal body parts, including bone marrow and soft tissues. It helps determine the extent of the tumor and whether it has spread to other areas.
  • Computed tomography (CT) scan: A CT scan uses X-rays and a computer to create detailed images of the bones and organs. It can aid in further evaluation of the tumor.
  • Positron emission tomography (PET) scan: A PET scan involves injecting a radioactive dye into the bloodstream to highlight areas with increased metabolic activity. It can help detect if the cancer has spread to other parts of the body.
  • Bone scan: A bone scan involves injecting a radioactive material into a vein, which then travels to areas with cancer in the bones. A scanner detects any suspicious areas.
• Biopsy: A biopsy is essential for confirming an osteosarcoma diagnosis. During this procedure, a small sample of tissue is taken from the affected area for examination in a laboratory. There are different types of biopsies, including core needle biopsy and surgical (open) biopsy.

Some additional tests include:

• Genetic testing: In some cases, genetic testing may be necessary to distinguish between different subtypes of osteosarcoma or to analyze tumor tissue for specific genetic abnormalities.
• Blood tests: Blood tests can help identify specific tumor markers that may indicate the presence or progression of osteosarcoma.

Specialists who may be involved in diagnosing osteosarcoma include:

• Orthopedic surgeons: These specialists have expertise in diagnosing and treating bone-related conditions.
• Oncologists: Oncologists specialize in diagnosing and treating cancer.
• Radiologists: Radiologists interpret imaging tests such as X-rays, CT scans, MRI scans, and PET scans.
• Pathologists: Pathologists analyze biopsy samples to determine the presence of cancer cells.

Determining the stage of osteosarcoma involves assessing how far the cancer has spread. This typically includes additional imaging tests such as chest CT scans to check for lung metastases (spread). The extent and location of metastasis help guide treatment decisions.

Overall, these examinations, tests, and procedures play crucial roles in diagnosing osteosarcoma, determining its type and stage, and guiding appropriate treatment approaches for improved outcomes. Remember to consult with healthcare professionals who can provide personalized advice based on individual circumstances.