Acute leukemia following a malignant teratoma in a child with klinefelter's syndrome. Case report and review of secondary leukemias in children following treatment of a primary neoplasm

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Abstract
A case of Klinefelter's syndrome with the development of a mediastinal teratocarcinoma is reported suggesting that the association of a gonadotropin-secreting tumor with the XXY chromosomal abnormality may be more than coincidental. Whereas this child appeared to survive the effects of the teratocarcinoma, he succumbed to acute leukemia two years later. This prompted a review of secondary leukemias in children following chemotherapy/radiotherapy for another primary malignancy. These patients responded poorly to treatment of the secondary leukemia with a median survival of about four months. The incidence of secondary leukemias might be expected to be on the rise as increasing numbers of pediatric cancer patients are surviving longer after treatment with agents that are potentially leukemogenic or carcinogenic themselves. Children who have survived cancer and its therapy present special problems and it will be necessary for the pediatrician and practitioner to monitor these children. Cancer 50:684–689, 1982.

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