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[Klinefelter syndrome in young children: possibility of diagnosis]
N Boluyt1, W W Hack, C T Schrander-Stumpel
1Afd. Kindergeneeskunde, Medisch Centrum Alkmaar.
Insights
Klinefelter syndrome (47,XXY) can manifest in childhood with symptoms like micropenis, delayed speech, and behavioral issues. Early consideration is key, especially with physical indicators such as small genitals or tall stature.
Area of Science:
- Pediatric Endocrinology
- Clinical Genetics
- Developmental Pediatrics
Background:
- Klinefelter syndrome (47,XXY) is a common genetic condition in males.
- It is often undiagnosed in childhood due to subtle or non-specific symptoms.
Observation:
- Four pediatric cases are presented, diagnosed with Klinefelter syndrome.
- Presenting symptoms included micropenis in one case, and delayed speech, language development, and behavioral problems in three cases.
- One case with behavioral issues and female fat distribution raised suspicion for chromosomal abnormality.
Findings:
- Klinefelter syndrome was diagnosed in boys presenting with micropenis.
- Delayed speech, language development, and behavioral problems were key indicators in other diagnosed cases.
- Physical characteristics like tallness and small genitals can be associated with the syndrome in children.
Implications:
- Highlights the importance of considering Klinefelter syndrome in pediatric evaluations for developmental delays and behavioral concerns.
- Suggests that early recognition of associated physical findings can aid in timely diagnosis.
- Emphasizes the need for increased awareness among clinicians regarding the varied presentations of Klinefelter syndrome in childhood.
Abstract:
In one boy aged 7 years with a micropenis, and in 3 boys aged 6, 4 and 5 years with delayed speech and language development and behavioural problems, Klinefelter's syndrome was diagnosed. In the first case the diagnosis was immediately suspected because of the micropenis. The other three boys were diagnosed after long observation. One of them was suspected of having a chromosomal abnormality because of behavioural problems together with a typical, female fat distribution pattern. If a delayed speech and language development and behaviour problems are present, Klinefelter's syndrome should be considered, especially if tallness and (or) small genitals are present.