Guillermo Alonso
Hospital Italiano de Buenos Aires
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Hormone Research in Paediatrics | 2007
Guillermo Alonso; Titania Pasqualini; Julio Busaniche; Eduardo Ruiz; Héctor E. Chemes
True hermaphroditism usually appears with ambiguous genitalia requiring extensive evaluation during the neonatal period. There have been occasional cases with better differentiation of external genitalia, leading to delays in diagnosis. We report the case of an adolescent boy with true hermaphroditism who presented with normal external genitalia and no sexual ambiguity. He was referred due to progressive gynecomastia and arrest of puberty. He presented at the age of 16 years for gynecomastia of rapid progression with normal penile development and both gonads in scrotum and normal testosterone and increased gonadotropin levels. Gonadal ultrasound scan was compatible with testicular and ovarian tissues in scrotum, and the karyotype showed two cellular lines (46,XX/46,XY). Gonadal histology revealed bilateral ovotestes. A genotype polymerase chain reaction mediated analysis using seven microsatellite markers did not confirm chimerism. Clinical findings and mechanism of generation are discussed.
Archivos Argentinos De Pediatria | 2013
Titania Pasqualini; Guillermo Alonso; Cecilia Fernández; Noemí Buzzalino; Liliana Dain
Although corticoid replacement is recommended for those late-onset adrenal hyperplasia with clinical manifestations, asymptomatic patients do not need treatment. We describe clinical features at diagnosis, treatment, and growth till adult- height, in 4 boys. At diagnosis, age ranged from 9.2-11.6 years. The initial symptoms/signs were: precocious pubarche (n = 2), accelerated bone age (n = 1) and precocious puberty (n = 1). All of them presented elevated 17 hydroxyprogesterone levels and were compound heterozygotes carrying p.V281L mutation. Since, at diagnosis, bone age was significantly advanced for chronological age (13.1 ± 0.5 vs. 10.2 ± 1.1 p = 0.008), hydrocortisone therapy was initiated. During follow-up, mean height Z score decreased 1.4 ± 0.4 SDS (p = 0.007), though adult mean height was not different from target height (-0.39 ± 0.7 vs. -0.04 ± 0.5 SDS, p = 0.054). In conclusion, in 4 symptomatic patients, accurate treatment of late-onset adrenal hyperplasia led to an adult mean height not different from target height. Advanced bone age at diagnosis and the loss of height during pubertal development suggest the need of therapy.
Pediatric Nephrology | 2007
Jorge R. Ferraris; Titania Pasqualini; Guillermo Alonso; Patricia Sorroche; A.M. Galich; Héctor G. Jasper
Medicina-buenos Aires | 2007
Titania Pasqualini; Guillermo Alonso; Rosángela Tomasini; A.M. Galich; Noemí Buzzalino; Cecilia Fernández; Carolina Minutolo; Liliana Alba; Liliana Dain
Medicina-buenos Aires | 2004
Armando Luis Negri; Teresa Negrotti; Guillermo Alonso; Titania Pasqualini
Pediatric Nephrology | 2010
Jorge R. Ferraris; Titania Pasqualini; Guillermo Alonso; Patricia Sorroche; A.M. Galich; Paula Coccia; Lidia Ghezzi; Verónica Ferraris; Liliana Karabatas; Clara Guida; Héctor Jasper
Archive | 2013
Titania Pasqualini; Guillermo Alonso
Archivos Argentinos De Pediatria | 2013
Titania Pasqualini; Guillermo Alonso; Cecilia Fernández; Noemí Buzzalino; Liliana Dain
Conexión Pediátrica | 2010
Cristina Catsicaris; Titania Pasqualini; Guillermo Alonso; Sebastian Gogorza; Lucila Barrionuevo
Conexión Pediátrica | 2008
Guillermo Alonso; Andrea Silva; Mónica E. Del Compare; Titania Pasqualini; Daniel D'Agostino; Marina Orsi