Neuroendocrine study of a male infant with septo-optic dysplasia

Area of Science:

• Pediatric Endocrinology
• Neuroendocrinology
• Developmental Biology

Background:

• Septo-optic dysplasia (SOD) is a congenital disorder characterized by optic nerve hypoplasia and midline brain abnormalities, often including absence of the septum pellucidum.
• Previous reports indicate a high prevalence of growth hormone deficiency in patients with SOD.
• Endocrine dysfunction in SOD can be complex and may involve multiple pituitary axes.

Observation:

• A male infant diagnosed with septo-optic dysplasia presented with a unique endocrine profile.
• Extensive endocrine evaluation revealed central diabetes insipidus, hypothalamic hypothyroidism, and combined hypothalamic-pituitary hypoadrenalism.
• Notably, this patient exhibited a normal pituitary growth hormone reserve.

Findings:

• This case represents the first documented instance of a patient with septo-optic dysplasia undergoing combined corticotropin-releasing factor (CRF) and growth hormone-releasing hormone (GHRH) stimulation testing.
• The results of the CRF and GHRH stimulation provided detailed insights into the hypothalamic-pituitary function in this specific SOD presentation.
• The findings underscore the variability of endocrine involvement in septo-optic dysplasia.

Implications:

• This case expands the known spectrum of endocrine abnormalities associated with septo-optic dysplasia.
• It emphasizes the importance of comprehensive endocrine evaluation in all patients diagnosed with SOD, beyond just growth hormone assessment.
• Understanding these complex hormonal interactions is crucial for accurate diagnosis and tailored management of pediatric patients with SOD.