CHARGE syndrome with both primary and secondary hypogonadism

Introduction CHARGE syndrome is a rare disorder that causes congenital abnormalities in multiple organs, including secondary hypogonadism. We report, herein, a unique case of CHARGE syndrome with both primary and secondary hypogonadism and discuss the possible causes and pathogenesis in this patient. Case presentation A 15‐year‐old boy with delayed secondary sexual characteristics and non‐palpable testes was referred to our hospital. Physical examination and detection of a chromodomain‐helicase‐deoxyribonucleic acid‐binding protein 7 gene mutation confirmed CHARGE syndrome. Hormone stimulation tests suggested both primary and secondary hypogonadism. Laparoscopic bilateral orchiectomy was performed because of decreased testosterone production and atrophy in both testes. Pathological examination of the testes revealed maturation arrest, germ cell neoplasm in situ, and decreased expression of steroid synthase. Conclusion This appears to be the first report of CHARGE syndrome with both primary and secondary hypogonadism demonstrated in endocrinological and histological examinations.