This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: New born infants, Subject name: Pediatrics
A single umbilical aery in newborn increases the risk of 
Select and explain. 
A. Meningomyelocoele, B. Occult Renal anomaly, C. Omphalocoele, D. Gastrochisis
B: Occult Renal anomaly
Answer: B: Occult Renal anomaly 
Explanation: The umbilical cord should have 2 aeries and 1 vein. A single umbilical aery is associated with an increased risk for an occult renal anomaly.Reference: Nelson Textbook of Paediatrics; 20th edition; Chapter 94; The Newborn Infant