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Health Care Providers Home > Information to Identify and Manage DES Patients > Patients Who Are DES Sons > Identification of DES Sons
Patients Who Are DES Sons

Patients Who Are DES Sons

 Overview
 Identification of DES Sons
 Health Risks and Related Concerns for DES Sons
 Counseling DES Sons
 DES References: Research on DES Sons
Identification of DES Sons

Studies of midlife and later health effects on persons exposed to DES in utero have not yet been completed. Identification of men exposed to DES in utero (DES Sons) often requires information from their mothers. Since many of these mothers are now elderly, if men exposed to DES are not identified now the opportunity to identify many of them may be lost.

In the United States, DES was prescribed primarily to prevent spontaneous abortion and premature delivery between 1938 and 1971 (12). Never patented, it was prescribed under more than 200 brand names under a variety of dosage regimens, including in combination with vitamins (290). DES was shown to lack efficacy for prevention of pregnancy complications in 1953 (291). However, it was still widely prescribed until it was demonstrated, in the early 1970s, that women exposed to DES in utero (DES Daughters) developed clear cell adenocarcinoma (CCA) of the vagina and cervix at a rate significantly higher than the general population (132,157).

Although public education campaigns were taken, not all men exposed to DES in utero (DES Sons) know about their exposure. DES was prescribed to pregnant women outside the United States after 1971, and is still available in oral form for human use in some countries today (294). Some men may be aware that their mothers were prescribed DES while pregnant. Others may suspect that they did, based on a mother's history of recurrent miscarriage and recollection of being treated with oral medication to prevent miscarriage during pregnancy between 1938 and 1971.

Men who may have been exposed to DES in utero should be encouraged to discuss the issue with their mothers, and, when possible, obtain their mother's obstetrical records. This is of particular importance since the health risks to DES Sons are still partially unknown. Many women who were prescribed DES while pregnant are elderly. If their children and grandchildren are not informed of their potential risk, opportunities for future intervention may be lost. For more information on the drug DES, including details of current usage, please refer to DES: Pharmacology.

For a complete list of the numbered citations on this page see DES References.

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