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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
What is the commonest aneuploidy seen in neonates born with single umbilical aery?
assistant
The correct answer is  Single umbilical aery: - It is seen in 5-10/1,000 bihs & its frequency increases in twin bihs - 30% of these infants are associated with more than one congenital abnormalities; among which Trisomy 18 is most commonest - Though it is associated with increased risk for occult renal anomaly, if no other anomalies are present, need for renal USG is controversial