期刊
JOURNAL OF PAEDIATRICS AND CHILD HEALTH
卷 48, 期 11, 页码 1029-1032出版社
WILEY-BLACKWELL
DOI: 10.1111/j.1440-1754.2012.02584.x
关键词
congenital adrenal hyperplasia; newborn screening; Western Australia
类别
Aim: To evaluate the incidence, sex distribution, ethnicity, age at diagnosis, clinical presentation and morbidity of all childhood-onset congenital adrenal hyperplasia (CAH) cases in Western Australia (WA) between 1990 and 2010, a state where newborn screening for CAH is not in place. Methods: The total number of all known CAH cases was identified. Case files were reviewed retrospectively to determine clinical details. Classical CAH (C-CAH) was defined as patients presenting before 6 months of age and non-classical (NC-CAH) as presenting after 6 months. Results: Of the 41 CAH cases (26 female) born in WA, 5(12.2%) were of Aboriginal ethnicity. CAH was due to 21-hydroxylase deficiency in 40 cases. Of those with 21-hydroxylase deficiency, 37 were C-CAH (25 female) and 3 NC-CAH (all male). The incidence of C-CAH in WA was estimated to be 0.67 per 10 000 live births (1:14 869). The incidence rate ratio of Aboriginal compared with non-Aboriginal C-CAH was 2.45 (95% confidence interval 0.966.29). The mean age of diagnosis of C-CAH cases was lower in females (8.9 +/- 2.5 days) compared to males (23.4 +/- 9.8 days). Among these males, 72.7% presented initially with adrenal crisis. Conclusion: The estimated incidence of classical CAH is similar to composite worldwide data. The increased female-to-male ratio is not in keeping with the expected sex distribution seen in a recessively inherited disease. The delayed diagnosis in males, with a significant proportion presenting with adrenal crisis, could be avoided with newborn screening. The higher rate of CAH in patients with Aboriginal ethnicity is a novel observation.
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