The role of genetic screening in the management of hereditary malignancy.

The identification of closely linked markers for several genetic syndromes has resulted in the routine identification of gene carriers for these disorders before the development of disease manifestations. The experiences with the multiple endocrine neoplasia syndromes, multiple endocrine neoplasia type 2 in particular, provide one example of how genetic testing can be combined with ongoing screening, treatment and support mechanisms to help families cope with the treatment realities and the psychosocial aspects of genetic disease.