Cancer Institute A national cancer institute
designated cancer center

Osteosarcoma Diagnosis

A number of procedures are used in the diagnosis of osteosarcoma.

Imaging Tests

Imaging tests are done before the biopsy. The following tests and procedures may be used:


Cells and tissues are removed during a biopsy so they can be viewed under a microscope by a pathologist to check for signs of cancer. It is important that the biopsy be done by a surgeon who is an expert in treating cancer of the bone. It is best if that surgeon is also the one who removes the tumor. The biopsy and the surgery to remove the tumor are planned together. The way the biopsy is done affects which type of surgery can be done later.

The type of biopsy that is done will be based on the size of the tumor and where it is in the body. There are three types of biopsy that may be used:

The following tests may be done on the tissue that is removed:

Stanford Medicine Resources:

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