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Revista Paulista de Pediatria

Print version ISSN 0103-0582


AUN, Adriana Mangue E. et al. Central precocious puberty as a sole manifestation of suprasellar arachnoid cyst. Rev. paul. pediatr. [online]. 2011, vol.29, n.1, pp.126-129. ISSN 0103-0582.

OBJECTIVE: Arachnoid cysts (AC) are a rare finding; 10% of them are suprasellar and occur almost exclusively in children. They are frequently associated with neurological and visual manifestations. Central precocious puberty as a sole manifestation is uncommon. CASE DESCRIPTION: Girl evaluated at the age of two years and seven months. She started breast development at the age of one year and eight months, pubic and axillary hair at the age of two years, with growth velocity acceleration (13cm/year) and increased bone age (seven years and one month). On exam: weight: 22.6kg (Z+4.0), height: 106cm (Z+3.5) and puberal stage of B3P2. The GnRH stimulus test was performed (basal LH 8.3 IU/L, at 30 minutes 94.3 IU/L; FSH basal=10.1 IU/L, at 30 minutes 29.5 IU/L). Nuclear Magnetic Resonance of the skull showed a suprasellar arachnoid cyst. Others stimulation tests were performed and excluded pituitary deficiencies. Treatment with a GnRH analog was started. At the age of four years and three months, she was B3P2, with normal growth velocity and neurologic development. COMMENTS: Central precocious puberty can be the only manifestation of AC. It is essential to establish early diagnosis and treatment. A prolonged follow up is recommended, since late pituitary dysfunctions can occur.

Keywords : child; precocious puberty; arachnoid cyst.

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