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• W3202093845 abstract "McCune-Albright syndrome (MAS) is a genetic disorder defined by fibrous dysplasia of bone, café-au-lait skin spots, and autonomous hyperfunction of one or more endocrine organs. MAS is caused by activating mutations of the GNAS1 gene. The most frequent type of endocrinopathy is gonadal endocrinopathy in the form of peripheral precocious puberty.To describe the clinical characteristics, laboratory and imaging tests at the time of diagnosis and over the course of the disease, focusing on the classical triad of MAS.Observational, descriptive, retrospective clinical study of patients with MAS seen at the Department of Endocrinology of Hospital de Niños Ricardo Gutiérrez between 1974 and 2019.Twelve girls are described, all of whom developed peripheral precocious puberty (PPP) secondary to functional ovarian cysts. Their age at presentation was early (2.6 ± 1.3 years). Gonadotropin levels were suppressed or in the prepubertal range with generally high estradiol levels. Ten girls had café-au-lait skin spots since birth. During the course of disease, polyostotic fibrous dysplasia was detected in all patients. The treatments used to reduce ovarian cyst recurrence and hyperestrogenism effects showed varied effectiveness.In this series, the onset of PPP helped to make an early diagnosis of MAS and was difficult to treat. The course of disease showed persistent gonadal hyperfunction and worsening of bone injuries.Introducción. El síndrome de McCune-Albright (SMA) es un trastorno genético caracterizado por displasia ósea fibrosa, manchas cutáneas color “café con leche” e hiperfunción autónoma de uno o varios órganos endocrinos. El SMA es producido por mutaciones activadoras del gen GNAS1. La endocrinopatía más frecuente es la gonadal, que se manifiesta como pubertad precoz periférica. Objetivo. Describir las características clínicas y los estudios de laboratorio e imágenes en el momento del diagnóstico y a lo largo de la evolución de la enfermedad, con énfasis en la tríada clásica del síndrome. Población y métodos. Estudio clínico observacional, descriptivo, retrospectivo de las historias clínicas de pacientes con SMA de la División de Endocrinología del Hospital de Niños Ricardo Gutiérrez desde 1974 hasta 2019. Resultados. Se presentan 12 niñas. Todas tuvieron pubertad precoz periférica (PPP) secundaria a quistes ováricos funcionantes. La edad de presentación fue temprana (2,6 ± 1,3 años). Los niveles de gonadotrofinas estuvieron suprimidos o en rango prepuberal con niveles de estradiol generalmente elevados. Diez niñas tuvieron manchas “café con leche” desde el nacimiento. Durante la evolución se detectó displasia fibrosa poliostótica en todas las pacientes. Los tratamientos utilizados para disminuir la recurrencia de los quistes ováricos y los efectos del hiperestrogenismo mostraron diferente eficacia. Conclusiones. En esta serie, la aparición de PPP contribuyó al diagnóstico temprano del SMA y fue de difícil tratamiento. En la evolución persistió la hiperfunción gonadal y empeoraron las lesiones óseas." @default.
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• W3202093845 date "2021-10-01" @default.
• W3202093845 modified "2023-10-07" @default.
• W3202093845 title "McCune-Albright syndrome, a rare form of precocious puberty: diagnosis, treatment, and follow-up" @default.
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• W3202093845 doi "https://doi.org/10.5546/aap.2021.eng.e420" @default.
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