Related Experiment Video
Updated: Aug 13, 2026

Array Comparative Genomic Hybridization (Array CGH) for Detection of Genomic Copy Number Variants
Published on: February 21, 2015
Should we screen for congenital adrenal hyperplasia? A review of 117 cases
Insights
Early diagnosis of congenital adrenal hyperplasia (CAH) improved after 1970 due to better testing and more specialists. Neonatal screening for CAH is not essential.
Area of Science:
- Pediatric Endocrinology
- Genetics
- Metabolic Disorders
Background:
- Congenital adrenal hyperplasia (CAH) is a group of genetic disorders affecting the adrenal glands.
- Early diagnosis and management are crucial for preventing life-threatening complications, particularly salt-wasting crises.
Purpose of the Study:
- To retrospectively analyze the diagnostic trends and outcomes of congenital adrenal hyperplasia patients.
- To investigate factors influencing the age at diagnosis and the prevalence of salt-losing forms of CAH.
Main Methods:
- Retrospective review of 117 patients with CAH treated at Birmingham Children's Hospital (1958-1985).
- Analysis of patient demographics, salt-losing status, and age at diagnosis in relation to birth year.
Main Results:
- The study included 47 boys and 70 girls, with 30 boys and 38 girls identified as salt losers.
- All salt-losing CAH cases were diagnosed before 6 months of age, with 90% diagnosed within the first month.
- Earlier diagnosis (post-1970) correlated with improved diagnostic methods (17 alpha-hydroxyprogesterone assay) and increased pediatric specialist availability.
Conclusions:
- Improved diagnostic capabilities and increased pediatric expertise have led to earlier identification of CAH.
- Current diagnostic practices appear sufficient, suggesting a neonatal screening program for CAH may not be necessary.
Abstract:
A total of 117 patients with congenital adrenal hyperplasia who were under the care of paediatricians at Birmingham Children's Hospital between 1958 and 1985 were reviewed retrospectively. There were 47 boys (40%) and 70 girls (60%); 30 of the 47 boys (64%) and 38 of the girls (58% of the 66 whose salt state was known) were salt losers. In all salt losers the condition was diagnosed before the age of 6 months, 90% of the diagnoses being made during the first month. The ratio of boys to girls, the distributions of salt losers to non-salt losers, and the age at diagnosis were studied in relation to the year of birth. Early diagnosis was found to be more common in children born after 1970 due partly to the introduction of a method of assaying the concentration of 17 alpha-hydroxyprogesterone in serum, partly to an increase in the number of paediatricians in the West Midlands, and partly to the appointment of a paediatric endocrinologist. A neonatal screening programme does not seem to be necessary.
Related Concept Videos
Smooth Endoplasmic Reticulum
The ER provides optimal conditions for synthesizing steroid hormones and lipids, such as phospholipids and triglycerides. Traditionally, lipid metabolism was considered to be a smooth ER function. However, there is no direct evidence to prove that rough ER is completely excluded from lipid...
Attention-Deficit/Hyperactivity Disorder
Diagnostic Criteria and Symptoms
To diagnose ADHD, symptoms must manifest before age 12 and be evident across multiple settings.
Cushing Syndrome I: Introduction
Cushing Syndrome II: Pathophysiology

