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In the present study, the results of brain magnetic resonance imaging (MRI) in girls with central precocious puberty (CPP) were compared those in with girls evaluated for headaches. A total of 295 girls with CPP who underwent sellar MRI were enrolled. A total of 205 age-matched girls with chronic or recurrent headaches without neurological abnormality who had brain MRI were included as controls. The positive MRI findings were categorized as incidental non-hypothalamic-pituitary (H-P), incidental H-P, or pathological. Positive MRI findings were observed in 39 girls (13.2%) with CPP; 8 (2.7%) were classified as incidental non-H-P lesions, 30 (10.2%) as incidental H-P lesions, and 1 (0.3%) as a pathological lesion (tuber cinereum hamartoma). The prevalence of positive MRI findings in girls with CPP did not differ from girls with headaches (13.2% vs. 12.2%, p = 0.74). The prevalence of incidental H-P lesions in girls with CPP &lt;6 years of age, 6-6.9 years of age, and 7-7.9 years of age was 21.2%, 13.5%, and 9.6%, respectively ( p = 0.21). Known pathological lesions were detected in only one (3.0%) girl with CPP aged &lt;6 years and in no girls with CPP aged 6-7.9 years. Microadenomas were detected in no girls with CPP aged &lt;6 years and in 5 (1.9%) girls with CPP aged of 6-7.9 years. Our findings call into question the routine use of brain MRI in girls with CPP, especially in girls 6 years or older. Current guidelines recommend a follow-up MRI in cases of microadenoma, but few data exist to support this recommendation for children.

Findings of Brain Magnetic Resonance Imaging in Girls with Central Precocious Puberty Compared with Girls with Chronic or Recurrent Headache