• The late effects of internally deposited radioactive materials are of increasing concern to radiologists. Such deposits occur in patients who have worked with luminous paints, have received radium salts orally or parenterally, or have been given thorium dioxide for diagnostic purposes.
Patients known to have received radioactive materials in such ways should be referred to laboratories equipped to evaluate their status. Physicians should be on the alert for bone changes, blood dyscrasias, and malignant tumors that might be the results of radioactive deposits in the body.
Medical centers throughout the nation should study the histories of patients known to have received thorium dioxide from about 1930 to 1945. A pilot study on this group is now being carried out in Washington, D. C. The experience so gained will facilitate studies on a national scale.
Looney WB, Colodzin M. LATE FOLLOW-UP STUDIES AFTER INTERNAL DEPOSITION OF RADIOACTIVE MATERIALS. JAMA. 1956;160(1):1–3. doi:10.1001/jama.1956.02960360003001
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