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The endocrine spectrum of septo-optic dysplasia
Insights
Septo-optic dysplasia in children presents variably based on hypothalamic-pituitary and vision issues. This study found significant endocrine dysfunction but less severe outcomes than previously reported.
Area of Science:
- Pediatric Endocrinology
- Neuro-ophthalmology
- Genetics
Background:
- Septo-optic dysplasia (SOD) is a rare congenital disorder.
- It is characterized by optic nerve hypoplasia, pituitary abnormalities, and midline brain structural defects.
- Previous reports suggested severe morbidity associated with SOD.
Purpose of the Study:
- To evaluate the clinical presentation and endocrine dysfunction in children with septo-optic dysplasia.
- To assess the neuroanatomic findings and overall morbidity in a cohort of SOD patients.
- To compare observed outcomes with previously reported severities of the syndrome.
Main Methods:
- Retrospective evaluation of six children diagnosed with septo-optic dysplasia at a specialized children's hospital.
- Comprehensive endocrine assessment including evaluation for growth hormone, thyroid, prolactin, ACTH, and diabetes insipidus.
- Review of neuroanatomic findings from imaging studies.
Main Results:
- Clinical presentation varied with age, reflecting the degree of hypothalamic-pituitary and ophthalmologic impairment.
- Endocrine deficits included growth hormone deficiency (4/6), hypothalamic hypothyroidism (4/6), and elevated prolactin (2/4).
- Adrenocorticotropic hormone deficiency (1/6) and diabetes insipidus (1/6) were also observed. Neuroanatomic findings were variable. Morbidity was generally less severe than previously described.
Conclusions:
- Septo-optic dysplasia is associated with a high degree of hypothalamic impairment.
- The clinical spectrum and endocrine dysfunction in SOD are diverse.
- This cohort suggests that SOD may not always carry the grave morbidity previously reported, necessitating individualized patient management.
Abstract:
Six children with septo-optic dysplasia were evaluated at the Children's Hospital of Philadelphia. There was a common history of young, nulliparous mothers. The clinical presentation of these children differed according to age of presentation and was a function of the degree and type of hypothalamic-pituitary and ophthalmologic impairment. Endocrine evaluation revealed four of six children to be growth hormone deficient, four of six to have hypothalamic hypothyroidism, and two of four to have elevated prolactin levels. One of the patients demonstrated adrenocorticotropic hormone deficiency, and one had diabetes insipidus. Neuroanatomic findings in the children were variable, but, in general, the rare syndrome did not carry as grave a morbidity as had been reported previously. Our data support a high degree of hypothalamic impairment in septo-optic dysplasia.