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Mediastinal teratoma and precocious puberty in a boy with mosaic Klinefelter syndrome

โœ Scribed by Derenoncourt, Ajanta N. ;Castro-Magana, M. ;Jones, Kenneth Lee

Publisher
John Wiley and Sons
Year
1995
Tongue
English
Weight
517 KB
Volume
55
Category
Article
ISSN
0148-7299

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โœฆ Synopsis

W e describe a boy who developed precocious puberty resulting from chorionic gonadotropin produced by a mediastinal germ cell tumor. Following tumor removal he began spontaneous precocious sexual development which was treated and then arrested spontaneously. Investigation of this arrested puberty established that he had Klinefelter syndrome (KS) mosaicism. He represents the first instance of KS mosaicism reported with a mediastinal germ cell tumor, a neoplasm commonly reported in males with a 47,XXY karyotype. We recommend that all males with KS and early sexual development or with "normal" testicular growth be screened with measurement of germ cell tumor markers including p-subunit of human chorionic gonadotropin and a-fetoprotein.

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