Dr. Ku article #2 / 7-12-06

I have considered getting a whole body scan to screen for cancer. Should I?

No. A whole body scan usually refers to a nondiagnostic CT scan (computerized tomography) of the chest, abdomen and pelvis to look for abnormalities. When done in a nondiagnostic fashion on persons without symptoms, these scans are done without the use of intravenous or oral dye in order to avoid potential risks and complications of getting the scan. Without these dyes (contrast) the detection rate for anything abnormal within organ structures is lowered. Major structural changes in organs could be seen, but this shows only an anatomic deviation from normal. Usually, these anatomic variants are not cancer, but this can only be determined after an extensive obligatory work up which would include more x-ray tests and biopsies.

We are all aware of anecdotal cases of the benefits of whole body scans in detecting something otherwise unknown. However, the assumption that early detection of cancers by whole body scans will improve survival is an unanswered question. Even in high-risk groups (i.e. screening smokers for lung cancer) the utility of scanning routinely for early detection is still under study, as no survival benefit has yet been shown in pursuing these tests. The best way to screen for cancer is to pursue the current recommended screening schedule as outlined by the American Cancer Society and to be vigilant about changes in your own body.

Nora C. Ku, M.D.

Board Certified, American Board of Internal Medicine

Diplomate, American Board of Medical Oncology

Diplomate, American Board of Hematology

Member, South Bay Independent Physicians Medical Group, Inc.