15q overgrowth syndrome

15q overgrowth syndrome is a rare partial autosomal trisomy/tetrasomy syndrome. The condition was first identified in a 2009 report.

Signs and symptoms
Features of this condition include: Macrocephaly and craniosynostosis may also be present.
 * Facial dysmorphism (long thin face, prominent forehead, down-slanting palpebral fissures, prominent nose with broad nasal bridge, and prominent chin)
 * Overgrowth (pre- and post-natal)
 * Renal anomalies (horseshoe kidney, renal agenesis, and hydronephrosis)
 * Mild to severe learning difficulties
 * Behavioural anomalies

Causes
The cause of this condition is genetic but its origins are unclear. The condition may be inherited (fashion unknown) or not inherited.