title: [Klinefelter syndrome with hypogonadotropic hypogonadism and absence of Leydig cells].
abstract: Klinefelter's syndrome is characterized by hypergonadotropic hypogonadism, 47,XXY karyotype, gynecomastia, azoospermia and testicular atrophy with hyalinization of seminiferous tubules and hyperplasia of Leydig cells. Some cases of Klinefelter's syndrome with unexplainably low levels of gonadotropins have been reported in the literature. Two additional cases of Klinefelter's syndrome with hypogonadotropic hypogonadism and absence of Leydig cells are described.
authors.affiliation: Servicio de Urología, Hospital La Paz, Facultad de Medicina, Universidad Autónoma, Madrid, España.
authors.forename: J M
authors.initials: JM
authors.lastname: Rodríguez de Ledesma
authors.forename: J M
authors.initials: JM
authors.lastname: Cozar Olmo
authors.forename: N
authors.initials: N
authors.lastname: Nistal Martín
authors.forename: J
authors.initials: J
authors.lastname: Cisneros
authors.forename: E
authors.initials: E
authors.lastname: Cuervo
authors.forename: J A
authors.initials: JA
authors.lastname: Martínez-Piñeiro
mesh_terms: D000328:Adult; D006801:Humans; D007713:Klinefelter Syndrome / Q000473:pathology*; D007985:Leydig Cells; D008297:Male
vernacular_title: Síndrome de Klinefelter con hipogonadismo hipogonadotropo y ausencia de células de Leydig.