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https://doi.org/10.1210/js.2019-mon-241
Copy DOIJournal: Journal of the Endocrine Society | Publication Date: Apr 15, 2019 |
License type: CC BY-NC-ND 4.0 |
Objectives: Small for gestational age (SGA) children may present an earlier onset of pubertal development, advanced bone maturation and reduced final height. The aim of this study was to compare the clinical parameters such as final adult height (FAH) and menarche with birth weight in girls with idiopathic precocious puberty (PP) treated with gonadotropin releasing hormone agonist (GnRHa). Subjects and methods: We retrospectively reviewed the medical records of 69 girls with PP who have reached FAH in a long-term trial of GnRHa treatment. The subjects were divided into SGA group and appropriated for gestational age (AGA) group. Anthropometric and endocrine parameters were obtained at diagnosis, at 6 months, and at cessation of GnRHa treatment. We investigated chronological age (CA), bone age (BA), BA / CA ratio, height and height SDS, predicted adult height (PAH-calculated with average table of BP method), PAH SDS, PAHa (calculated with advanced table of BP method), basal and stimulated gonadotropin levels, duration of treatment, duration of menarche, and FAH after treatment. The statistical significances of the clinical parameters between the two groups were compared. Results: The BA at the time of diagnosis was higher in SGA than in AGA (p <0.05). In the SGA, PAH SDS and PAHa were lower than those of AGA (p <0.05), but there was no significant difference in FAH between two groups. The FAH after GnRHa treatment was higher than PAH at diagnosis between SGA and AGA groups (p <0.05) . Body mass index was higher at the end of treatment in SGA group than in AGA (p <0.05). In addition, it was confirmed that the menarche was fast after treatment in SGA than in AGA (p <0.05). Target height, height SDS at diagnosis, PAH at diagnosis, and height SDS at end of treatment were found to be factors affecting FAH (p <0.05) . Conclusion: SGA girls with PP have increased bone age and rapid menarche than those of AGA group. But FAH after GnRHa treatment was not difference between the SGA and AGA groups. GnRHa treatment in SGA with PP may be helpful in improving FAH, and further large - scale studies will be needed in the future.
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