A Case Report of Precocious Puberty in Children Associated with Hypothalamic Hamartoma in Neurofibromatosis Type 1.

Lee,  Shin Ae; Kim,  Jin Ho; Kim,  Sun Jun

doi:2018.26.1.48

Ann Child Neurol > Volume 26(1); 2018 > Article

Original Article

Journal of the Korean Child Neurology Society 2018;26(1):48-51.
DOI: https://doi.org/10.26815/jkcns.2018.26.1.48 Published online March 30, 2018.

A Case Report of Precocious Puberty in Children Associated with Hypothalamic Hamartoma in Neurofibromatosis Type 1.

Shin Ae Lee, Jin Ho Kim, Sun Jun Kim

¹Department of Pediatrics, Chonbuk National University Medical School, Jeonju, Korea. sunjun@jbnu.ac.kr
²Research Institute of Clinical Medicine, Chonbuk National University Medical School, Jeonju, Korea.

Abstract

Neurofibromatosis type 1 (NF1) is a common neurocutaneous syndrome that presents with multiple café-au-lait spots, skinfold freckling, dermatofibromas, neurofibromas, and Lisch nodules. Mutations of the NF1 gene, encoding the protein neurofibromin, have been identified as the cause of this disease. NF1 can also present with precocious puberty and be associated with optic pathway tumors. Hypothalamic hamartoma as the cause of precocious puberty in patients with NF1 has been rarely described in the literature. Here, we report the findings for a patient with NF1 and precocious puberty associated with a hypothalamic hamartoma who had a newly discovered 14-bp deletion mutation in exon 5 of NF1. To our knowledge, this is the first time this combination is reported in the literature.

Key Words: Neurofibromatosis 1, Puberty, Precocious, Hypothalamic disease, Hamartoma