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Trisomy 8 mosaicism syndrome.

Marzena Wiśniewska¹, Małgorzata Mazurek

¹Department of Medical Genetics, Karol Marcinkowski University of Medical Sciences, Poznań, Poland. wisniew@sk5.usoms.poznan.pl

Journal of Applied Genetics

|June 27, 2002

Summary

This case study highlights a 15-year-old boy initially evaluated for Marfan syndrome. Chromosomal analysis revealed trisomy 8 mosaicism, offering a new diagnosis for his symptoms.

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Area of Science:

Genetics
Clinical Medicine
Pediatrics

Background:

Marfan syndrome is a genetic disorder affecting connective tissue, often presenting with skeletal, ocular, and cardiovascular abnormalities.
The patient, a 15-year-old male, had a long-standing clinical history suggestive of Marfan syndrome.
Symptoms included skeletal defects, mild intellectual disability, and facial dysmorphic features.

Observation:

The patient's prolonged evaluation for Marfan syndrome involved assessment of multiple physical characteristics.
Despite extensive evaluation for Marfan syndrome, a definitive diagnosis remained elusive for many years.
Detailed clinical observation noted skeletal abnormalities, cognitive impairment, and distinct facial features.

Findings:

Chromosomal analysis was performed to investigate the underlying cause of the patient's complex phenotype.
The chromosomal analysis identified a trisomy 8 mosaicism in the patient.
This genetic finding provides a potential explanation for the observed clinical features.

Implications:

Trisomy 8 mosaicism should be considered in the differential diagnosis of patients with features overlapping Marfan syndrome.
Accurate genetic diagnosis is crucial for appropriate patient management and genetic counseling.
This case underscores the importance of comprehensive genetic testing in complex pediatric cases.

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