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Growth hormone deficiency in a case of crouzon syndrome with hydrocephalus
Mei-Hong Wen1, Hui-Pin Hsiao, Mei-Chyn Chao
1Department of Pediatrics, Kaohsiung Municipal United Hospital, Kaohsiung 813, Taiwan.
Insights
Crouzon syndrome, a craniofacial disorder, can present with severe growth retardation and hydrocephalus, potentially linked to growth hormone deficiency. This case highlights an unusual presentation requiring further investigation into associated endocrine abnormalities.
Area of Science:
- Genetics
- Pediatrics
- Endocrinology
Background:
- Crouzon syndrome is an autosomal dominant craniofacial disorder characterized by craniosynostosis.
- It is typically associated with specific FGFR2 gene mutations.
- Growth retardation is not a commonly reported feature.
Observation:
- A case report of an 11.5-year-old boy with Crouzon syndrome presenting with severe growth retardation.
- The patient exhibited hydrocephalus since infancy, dizziness, and significantly delayed bone age.
- Magnetic resonance imaging revealed shallow orbits, obstructive hydrocephalus, and cerebellar tonsil herniation.
Findings:
- Growth hormone provocative tests indicated a reduced peak growth hormone response.
- Severe iron deficiency anemia was concurrently diagnosed.
- Molecular analysis confirmed a Cys278Phe mutation in the fibroblast growth factor receptor 2 (FGFR2) gene.
Implications:
- This case suggests a potential association between Crouzon syndrome, hydrocephalus, and growth hormone deficiency.
- Further research is warranted to understand the incidence and mechanisms of growth retardation in Crouzon syndrome.
- Highlights the importance of comprehensive endocrine evaluation in craniofacial syndromes with atypical presentations.
Abstract:
Crouzon syndrome is one of the most common craniofacial syndromes and is inherited as autosomal dominant with variable expression. We report an 11 and a half-year-old boy with Crouzon syndrome with severe growth retardation. He had hydrocephalus since infancy and recently suffered from frequent dizziness. His bone age was only 5 years according to the Greulich and Pyle atlas. Magnetic resonance imaging showed shallow orbits, obstructive hydrocephalus, and cerebellar tonsil herniation. Growth hormone provocative tests revealed a reduced peak growth hormone response in both insulin and clonidine tests. Severe iron deficiency anemia was noted at the same time. Molecular analysis identified a common mutation point of Cys278Phe for Crouzon syndrome in exon IIIa of the fibroblast growth factor receptor 2 (FGFR2) gene. Since growth retardation is not a common feature of Crouzon syndrome, we reviewed the literature for the incidence of hydrocephalus in Crouzon syndrome and the association with growth hormone deficiency.
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