Growth Hormone Deficiency in Children: From Suspecting to Diagnosing

Area of Science:

• Pediatrics
• Endocrinology
• Genetics

Background:

• Isolated Growth Hormone Deficiency (GHD) is a treatable cause of short stature.
• Diagnosis can be challenging due to the absence of a single definitive test.
• Certain phenotypes and medical histories suggest GHD, but differential diagnosis is crucial.

Purpose of the Study:

• To outline diagnostic criteria and methods for Growth Hormone Deficiency in short children.
• To emphasize the importance of excluding other conditions before GHD evaluation.
• To highlight supportive diagnostic markers for GHD.

Main Methods:

• Evaluation of children with short stature, focusing on height, height velocity, and bone age.
• Exclusion of more common causes of short stature.
• Provocative testing for Growth Hormone (GH) levels in euthyroid children, with potential sex steroid priming.
• Measurement of Insulin-like Growth Factor 1 (IGF-1) and Insulin-like Growth Factor Binding Protein 3 (IGFBP-3) levels.
• Neuroimaging to assess pituitary structure.

Main Results:

• Short children with height significantly below midparental height, low height velocity, and delayed bone age warrant further investigation.
• Provocative testing is essential for assessing GH levels.
• Low IGF-1 and IGFBP-3 levels, along with pituitary abnormalities, support the diagnosis of GHD.

Conclusions:

• Growth Hormone Deficiency diagnosis in short stature requires a systematic approach, prioritizing exclusion of other conditions.
• Provocative testing, IGF-1, IGFBP-3 levels, and neuroimaging are key components of a comprehensive diagnostic workup.
• Early and accurate diagnosis is vital for timely and effective treatment of short stature due to GHD.